Author name: Mike M.

google-releases-vaultgemma,-its-first-privacy-preserving-llm

Google releases VaultGemma, its first privacy-preserving LLM

The companies seeking to build larger AI models have been increasingly stymied by a lack of high-quality training data. As tech firms scour the web for more data to feed their models, they could increasingly rely on potentially sensitive user data. A team at Google Research is exploring new techniques to make the resulting large language models (LLMs) less likely to “memorize” any of that content.

LLMs have non-deterministic outputs, meaning you can’t exactly predict what they’ll say. While the output varies even for identical inputs, models do sometimes regurgitate something from their training data—if trained with personal data, the output could be a violation of user privacy. In the event copyrighted data makes it into training data (either accidentally or on purpose), its appearance in outputs can cause a different kind of headache for devs. Differential privacy can prevent such memorization by introducing calibrated noise during the training phase.

Adding differential privacy to a model comes with drawbacks in terms of accuracy and compute requirements. No one has bothered to figure out the degree to which that alters the scaling laws of AI models until now. The team worked from the assumption that model performance would be primarily affected by the noise-batch ratio, which compares the volume of randomized noise to the size of the original training data.

By running experiments with varying model sizes and noise-batch ratios, the team established a basic understanding of differential privacy scaling laws, which is a balance between the compute budget, privacy budget, and data budget. In short, more noise leads to lower-quality outputs unless offset with a higher compute budget (FLOPs) or data budget (tokens). The paper details the scaling laws for private LLMs, which could help developers find an ideal noise-batch ratio to make a model more private.

Google releases VaultGemma, its first privacy-preserving LLM Read More »

monthly-roundup-#34:-september-2025

Monthly Roundup #34: September 2025

All the news that’s fit to print, but has nowhere to go.

This important rule is a special case of an even more important rule:

Dirty Hexas Hedge: One of the old unwritten WASP rules of civilization maintenance we’ve lost is: when someone behaves insincerely for the sake of maintaining proper decorum, you respond by respecting the commitment to decorum rather than calling out the insincerity.

The general rule is to maintain good incentives and follow good decision theory. If someone is being helpful, ensure they are better off for having been helpful, even if they have previously been unhelpful and this gives you an opportunity. Reward actions you want to happen more often. Punish actions you want to happen less often. In particular beware situations where you punish clarity and reward implicitness.

Another important rule would be that contra Elon Musk here you shouldn’t ‘sue into oblivion’ or ‘ostracize from society’ anyone or any organization who advocated for something you disagree with, even if it plausibly led to a bad thing happening.

Even more importantly: When someone disagrees with you, you don’t use the law to silence them and you most definitely don’t choose violence. Argument gets counterargument. Never bullet, no arrest, no fine, always counterargument. I don’t care what they are advocating for, up to and including things that could plausibly lead to everyone dying. It does not matter. No violence. No killing people. No tolerance of those who think they can have a little violence or killing people who disagree with them, as a treat, or because someone on the other side did it. No. Stop it.

This seems like one of those times where one has to, once again, say this.

This seems like a lot of percents?

Benjamin Domenech: New death of the West stat: 42 percent of people in line to meet Buzz Lightyear at Disney theme parks last year were childless adults.

Source: author A.J. Wolfe on Puck’s The Town podcast.

PoliMath: When I went to Disney in 2019, my kids were in line to meet Sleeping Beauty and the guy in front of us was a 30ish single dude who gave her a bouquet of roses and weirdly fawned over her. I admired the actress for not displaying her disgust.

If that is who gets the most value out of meet and greets, okay then. It also presumably isn’t as bad as it sounds since it has been a long time since Buzz Lightyear has been so hot right now, I presume characters in recent movies have a different balance. The price sounds sufficiently high that they should add more copies of such characters for meet and greets until the lines are a lot shorter? How could that not raise profits long term?

Some notes from Kelsey Piper on literary fiction.

A-100 Gecs (1m views): the pearl-clutching about no young white men being published in The New Yorker is so funny like men, writ large, are basically a sub-literate population in the US. men do not read literary fiction. if you have even a passing interaction with publishing you realize this.

Kelsey Piper:

  1. Open disdain for people on the basis of their sex is bigoted and bad.

  2. Men obviously did read and write literary fiction for most of the history of literary fiction; so, if that has changed, I wonder why it has changed! Perhaps something to do with the open disdain!

Like in general, I try not to waste too much of my time on “this hobby has too few Xs” or “this hobby has too few Ys,” since that can happen totally organically, and pearl-clutching rarely helps.

However, if the hobbyists are saying “our hobby has no men because they are a ‘subliterate population,’” then I suddenly form a strong suspicion about why their hobby has no men, and it’s not that people innocently have different interests sometimes.

John Murdoch gives us many great charts in the FT, but often we lack key context and detail, because as John explains he only has very limited space and 700 words and everything needs to be parsable by a general audience, so spending space on methodology or a full y-axis is very expensive. We appreciate your service, sir. It would still be great to have the Professional Epistemically Ideal Edition available somewhere, any chance we can do that?

Reading books for pleasure continues to decline by roughly 3% per year. Alternatives are improving, while books are not improving, indeed the best books to read are mostly old books. So what else would you expect? Until recently I would say people are still reading more because a lot of screen use is reading, but now we have the rise of inane short form video.

Madeleine Aggeler figures out very basic reasons why you might want to not be constantly lying, and that she would be better off if she stopped lying constantly and that you really can tell people when you don’t want to do something, yet she fails to figure out that not lying does not require radical honesty. You can, and often should, provide only the information needed.

The IQ tests we have are drawn from a compact pool of question types and so can, unsurprisingly, be trained for and gamed. If you want to raise the result of your IQ test this way, you can totally do that. Goodhart’s Law strikes again. That doesn’t mean IQ is not a real or useful thing, or that these tests are not useful measures. It only means that if you want to make the (usually low-IQ) move of pretending to be higher IQ than you are by gaming the test, you can do that. So you need to not give people strong incentive to game the tests.

I often hear discussion of ‘masking’ where autistics learn how to fake not being autistic and seem like normies, or similarly where sociopaths learn not to act like sociopaths (in the clinical sense, not the Rao Gervais Principle sense) and seem like normies, because they realize that works out better for them. I mention this because I notice I rarely hear mention of the fact that (AIUI) the normies are mostly doing the same exact thing, except that they more completely Become The Mask and don’t see it as a strange or unfair or bad thing to do this kind of ubiquitous mimicry, and instead do it instinctively?

There is an obvious incentive problem here, very central and common.

Eugyppius: when you’re with girl, do not quietly remove bugs. call her attention to bugs first, then heroically remove them for her. they love this.

Lindy Man: This is also good advice for the workplace. Never fix anything quietly.

Sean Kelly: When I discover a bug and figure out the solution, I don’t fix it.

I have an accomplice report it and play up how bad it is in the stand up.

Then I sagely chime in, “I bet I can figure that one out.”

If the bug looks tough, the accomplice suggests the H-1B with the shortest queue.

Caroline: People will fix things quietly and then complain they’re underappreciated. Does anyone even know what you did? lol

Kyle Junlong: ah yes, “half the work is showing your work.”

honestly this is so powerful. i’m realizing how valuable communication and visibility is, not just in work but in relationships and life.

i used to think managing other people’s perception of me was stupid and frivolous, but now i realize how *ijudge other people is solely based on my perception (eg., the convenient information) i have of them. so of course it makes sense to present myself well, because i like those who do present themselves well to me.

Over time, if you don’t take credit for things, people notice that you silently fix or accomplish or improve things without taking credit or bothering anyone about it, and you get triple credit, for fixing things, for doing it seamlessly and for not needing or requesting credit. The problem is, you need a sufficiently sustained and observed set of interactions, and people sufficiently aware of the incentive dynamics here, so that you can move the whole thing up a meta level.

There is also the reverse. If you know someone who will always loudly take credit, you know that at most they are doing the things they loudly take credit for. If that.

I am generally skeptical that we should worried about inequality, as opposed to trying to make people better off. One danger that I am convinced by is that extreme inequality that is directly in your face can damage your mental health, if you see yourself in competition with everyone on the spectrum rather than being a satisficer or looking at your absolute level of wealth and power.

Good Alexander: I think the main reason you find a lot of very unhappy tech people even at the highest levels

– when you’re a typical employee everyone around you is making .5-2x what you are

– when you start breaking out wealth goes on log scale. ppl with 10-1000x your net worth become common

– this is native to network effects, scale associated with AI training, and other winner take all dynamics in tech

– all of VC is structured this way as well — (1 unicorn returns entire fund rest of investments are zero) which psychologically reinforces all or nothing thinking

– this makes competitive people miserable

– this leads them to do hallucinogens or other psychoactive substances in order to accept their place in the universe

– the conclusions drawn from these psychoactive substances are typically at direct odds with how they got to where they are

– and after getting one shotted they’re still ultimately in a hard wired competition with people worth 10-1000x more than them

– due to the structure of technology it becomes more or less impossible to break out of your ‘bracket’ without engaging in increasingly dark things

– you realize that time is running out — and become aware of synthetic biology (peptides, genetic alteration of children)

– you end up getting involved in police state investments, gooning investments, or crypto — and view it as non optional to take the gloves off bc everyone around you is doing the same thing

– you’re on a permanent hedonic treadmill and you can’t ever get off or go back to where you were before bc after doing all of the things you’ve done you can’t possibly ever relate to normal humans

– you get involved with politics or Catholicism or other Lindy cults to try and get off the treadmill

– of course it won’t work and you bring all the weird baggage directly into politics or religion and poison those wells too

the current configuration of economics/ wealth distribution is pretty solidly optimized to drive the wealthiest people in society batshit insane, which – to some extent – explains a lot of things you see around you

w this framework you can understand:

Thiel Antichrist obsession

Kanye getting into Hitler and launching a coin

Trump memeing himself into becoming President then running again to escape imprisonment

Elon generating Ani goon slop on the TL

A16z wilding out

Eliezer Yudkowsky: – supposed “AI safety” guys (outside MIRI) founding AI companies, some of whom got billions for betraying Good and Law.

I have felt a little pressure to feel insane about that, but it is small compared to all the other antisanity pressures I’ve resisted routinely.

David Manheim: This is definitely not wrong, even though it’s incomplete:

“the current configuration of economics/ wealth distribution is pretty solidly optimized to drive the wealthiest people in society batshit insane, which – to some extent – explains a lot of things you see around you”

Speaking from experience, it is quite the trip to be in regular contact and debates with various billionaires. It can definitely make one feel like a failure or like it’s time to make more money, even though I have enough money to not worry about money, especially when you think you definitely could have joined them by making different life choices, and there’s a chance I still could. Whereas, when in prior phases of life I was not in such contact, it was easy not to care about any of that.

It helps to remind myself periodically that if I had a billion dollars, I could make the world a better place, but except insofar as I prevented us all from dying my own life would, I anticipate, not actually be better as a result. At that level, there isn’t that much more utility to buy, whereas more money, more problems.

It’s not easy buying art.

cold: Bro you make $500k at OpenAI you can go to the art fair and buy a little $10,000 painting to hang up in your SF apartment’s living room

You tell them this and then they’ll be like “I’m sorry 🥺 do you think a $15,000 desert meditation retreat will fix me so I’m not like this anymore??”

Daniel: The lack of personal art purchasing in SF is insane. A $3000 oil on canvas can change your whole living room and they won’t do it.

I know people who earn much more than $500k at openai and their living rooms are making them depressed.

Paul Graham: The main reason rich people in SV don’t buy art is that it does actually take some expertise to do it well. And since the kind of people who get rich in SV hate to do things badly, and don’t have time to learn about art now, they do nothing.

diffTTT: Rich SV people need an expert to tell them what kind of art they like?

Paul Graham: In a way. They need to learn how not to be fooled by meretricious art, how to avoid the immense influence of hype and fashion, etc. Most people have to figure this out for themselves or from books, but a truly competent expert could help.

If it takes some expertise to buy art well, that is a real problem with buying art. The thing is, if you do not buy art well, you will lose most of the money you spent on art, and also you will look like a fool, and also the art will not make you feel better or much improve your living room.

That leaves four options.

  1. The one these people and I have taken, which is to not buy art.

  2. Buy cheap art that you don’t mind looking at. Safe, but still annoying to do, and then you have to look at it, does it actually make you feel better?

  3. Spend a lot of time figuring out how to buy expensive art properly. Yeah, no. I understand that Paul Graham can be in renaissance man mode, but if you are coding at OpenAI at $500k+ per year the cost of this is very, very high, and also you probably don’t expect the skill to stay relevant for long.

  4. Find someone you trust to do it for you? Not cheap, not all that easy or quick to do either, and you are still the one who has to look at the damn thing.

Besides, who is to say that a constant piece of artwork actually helps, especially if it doesn’t hold particular meaning to you? I mean, yeah, in theory yeah we should get some artwork here, I suppose, but no one wants to do the work involved, also it should definitely be cheap art. At one point I bought some Magic: The Gathering prints for this but we never got around to hanging them.

Also at one point I tried to buy the original art for Horn of Greed, which at the time would have cost like $3k. I say tried because my wife wouldn’t let me, but if anyone wants to buy me a gift at some point, that or another original Magic art I’d look back on fondly seems great.

If there is one thing to learn from rationality: Peter Wildeford is 100% right here.

Wikipedia (Wet Bias): Wet bias is the phenomenon whereby some weather forecasters report an overestimated and exaggerated probability of precipitation to increase the usefulness and actionability of their forecast.

The Weather Channel has been empirically shown, and has also admitted, to having a wet bias in the case of low probability of precipitation (for instance, a 5% probability may be reported as a 20% probability) but not at high probabilities of precipitation (so a 60% probability will be reported as a 60% probability).

Some local television stations have been shown as having significantly greater wet bias, often reporting a 100% probability of precipitation in cases where it rains only 70% of the time.

Colin Fraser: If you believe it will rain with probability P, and getting caught in the rain without an umbrella is X times worse than getting caught in the sun with an umbrella, then it’s optimal to predict rain whenever P ≥ 1/(1+X). So e.g. for X=2 you should predict rain at P ≥ 1/3.

Peter Wildeford: I think you should only predict rain according to the correct p(rain), but you can change your behavior around umbrella carrying at lower values of p(rain).

Colin Fraser is right if you effectively can only predict 0% or 100% rain, and the only purpose of predicting rain is that you take an umbrella if and only if you predict rain.

Peter Wildeford is right that you can say ‘it will rain 40% of the time, therefore I should take an umbrella, even though more than half the time I will look foolish.’

The weather reports are assuming that people have a typical bias, that people respect 40% chance or more, but not 30%. Thus, there is a huge jump (AIUI, and Claude confirms). If the Google weather app says 30%, treat that as at most 10%, but the app doesn’t want to get blamed so it hedges. Whereas if it says 40%? That’s pretty much 40%, act accordingly.

If you don’t know the way the conversion works, and you don’t have the typical biases, you’ll respond in crazy wrong fashion. The bias and nonlinearity become self-perpetuating.

The right rule in practice really is to take the umbrella at 40% and not at 30%, almost no matter what the cost-benefit tradeoff is for the umbrella, since it is obviously wise at 40% and obviously unwise at 10%.

The ‘predict 100% instead of 70%’ thing that other sources do is especially maddening. This means both that you can’t tell the difference between 70% and 100%, and that on the regular you notice things that were predicted as Can’t Happen actually happening. The weather forecaster is consigned to Bayes Hell and you can’t trust them at all.

As Bryan Caplan notes, this is frequently a better question than ‘if you’re so smart, why aren’t you rich?’ It is a very good question.

His rejections of various responses are less convincing, with many being highly oversimplifying and dismissive of many things people often care about deeply. He presents answers as if they were easy and obvious when they are neither of those things.

I endorse rejection of the objection ‘the world is so awful that you have to be stupid to be happy.’ I don’t endorse his reasoning for doing so. I do agree with him that the world is in a great spot right now (aside from existential risks), but I don’t think that’s the point. The point is that it isn’t improving your life or anyone else’s to let your view of the world’s overall state make you indefinitely unhappy. If you think you ‘have’ to be stupid not to be perpetually unhappy for whatever external reason, you’re wrong.

I also agree with him that one good reason to not be happy is that you are prioritizing something else. He retorts that few people are extreme Effective Altruists, but this is not required. You don’t have to be some fanatic, to use his example, to miserably stay together for the kids. What you care about can be anything, including personal achievements other than happiness. Who says you have to care about happy? Indeed, I see a lot of people not prioritizing happiness enough, and I see a lot of other people prioritizing it far too much.

There’s also another answer, which is that some people have low happiness set points or chemical imbalances or other forms of mental problems that make it extremely difficult for them to be happy. That’s one of the ways in which one can have what Bryan calls ‘extraordinary bad luck’ that you can’t overcome, but there are other obvious ways as well.

‘Digital Content Creators’ joins the list of professions that officially face ‘no tax on tips.’ Influencers and podcasters are explicitly getting a tax break.

From a public choice standpoint I suppose this was inevitable. However, this phases out at higher income levels, which means that none of the prominent people you are thinking of likely can benefit from this. As in, Republicans proudly embraced progressive taxation to partially offset regressive tariffs? So yes, I do accept tips, and very much appreciate them along with subscriptions, but alas after consulting with my tax lawyer (GPT-5 Pro) I have concluded that I cannot benefit from this policy.

Did men dress better and therefore look better in the past? Derek Guy makes the case that they did and attempts to explain why and what he means by better.

I think I agree that in a purely aesthetic sense people did dress ‘better,’ but that is because people in the past put massive investment into this. They spent a huge percentage of their income on clothes, they spent a large percentage of their time and attention on understanding, creating and maintaining those clothes, and they were willing to suffer a lot of discomfort. And they faced huge social and status pressures to devote such efforts, with large punishments for not measuring up to norms.

Derek notes our reduced tolerance for discomfort and lack of effort, but skips over all the extra money and time and cognitive investments, seems to lack the ‘and this is good, actually’ that I would add. I think it’s pretty great that we have largely escaped from these obligations. The juice is not worth the squeeze.

Santi Ruiz interviews Dr. Rob Johnston on the intelligence community and how to get good intelligence and make good use of it. There’s lots of signs of a lot of deep competence and dedication, but clearly the part where they deliver the information and then people use it is not going great. Also not going great is getting ready for AI.

Nate Silver explains what Blueskyism is, as in the attitude that is pervasive on Bluesky, and why it is not a winning strategy in any sense.

Texas becomes the seventh state to ban lab grown meat. Tim Carney becomes the latest person to be unable to understand there could be any reason other than cronyist protectionism to want this banned. Once again I reiterate that I don’t support these bans, but it seems disingenuous to prevent not to understand the reasons they are happening. James Miller offers a refresher of the explanation, if you need one, except that the demands wouldn’t stop with what Miller wants.

No, the Black Death was not good for the economy, things were improving steadily for centuries for other reasons. As opposed to every other pass famine or plague ever, where no one looks back and says ‘oh this was excellent for economic conditions.’

It is relatively easy to stay rich once already rich. It is not easy to get rich, or to be ‘good at’ being rich. It is also hard to be rich effectively, including in terms of turning that extra money into better lived experiences, and ‘use the money to change the world’ is even harder.

Roon: its amazing how little the post-economic people i know spend. many people are bad at being rich. you should teach them how to do it.

i think this is often why the children of the mega-rich are the ones who even get close to squandering their parents’ fortunes. when you get rich later into life you often don’t think with enough 0s in terms of personal consumption, donations, having a lavish household staff etc.

Eliezer Yudkowsky: In their defense, once you’ve already got your personal chef, volcano lair with trampoline, and a harem that covers all your kinks, there’s just not much else Earth offers for converting money to hedons.

Zvi Mowshowitz: It is remarkably difficult (and time consuming!) to spend large amounts of money in ways that actually make your life better, if you’re not into related status games.

I got into a number of arguments in the comments, including with people who thought a remarkably small amount of money was a ‘large amount.’ Certainly you can usefully spend substantially more than most people are able to spend and still see gains.

Reasonably quickly you hit a wall, and the Andy Warhol ‘everyone gets the same Diet Coke’ problem, and to do better you have to spend obscene amounts for not that much improvement. Are you actually going to be that much happier with a giant yacht or a private jet? What good is that private chef compared to Caviar or going to restaurants? Do you actually want to live farther away in some mansion? Does expensive art do anything for you cheap art doesn’t? And so on.

Even in the ways that would be good to spend more, you still need to know how to spend more and get value from what you paid, and how to do it without it taking up a ton of your time, attention or stress. Again, this is harder than it sounds.

We talk constantly about ‘losing to China’ whereas in China there are reasons to worry that China is losing, not to an outside force but rather in general, and this is on top of a fertility rate that is 1.1 or below and an already declining population:

Mike Bird: Useful chart from @andrewbatson here covering one of the most under-discussed and useful macro metrics around. China’s capital productivity has been in consistent, marked decline even as panic over Chinese industrial prowess has reached fever pitch

Indeed as of 2019-2023 China’s marginal product of capital (basically how much output you’re getting from another unit of capital) was only very slightly higher than that of the US, though the US is at the frontier of GDP per capita and China nowhere near.

Clearly both things can be true – that some of China’s leading industrial firms are incredibly impressive, world-leading, and that in the aggregate they’re not enough to offset the misallocation and inefficiency elsewhere.

He quotes that the manufacturing share of GDP in China, for all our worries about Chinese manufacturing, declined 2-3 percent between 2021 and 2025, with the sector now having narrower margins, lower profits and more losses.

All of this is more reason not to give them opportunity to invest more in AI, and also reason not to catastrophize.

Cate Hall thanks you for coming to her TED talk, ‘A Practical Guide To Taking Control of Your Life.’ Which is indeed the Cate Hall TED Talk you would expect, focusing on cultivating personal agency.

In my startup roundups I muse about why don’t startups offered TMM (too much money, here presumably also at too high a valuation) take the money and then set expectations accordingly? A commenter pointed out that Stripe did do a version of this, although it is not a perfect fit.

Motivation and overcoming fear are tricky. You can get people comfortable with public speaking with complements. You can also do it by having people starting with you come up and give intentionally terrible speeches while they get crumpled papers thrown at them, to show that nothing actually bad happens.

Can national-level happiness be raised or are we doomed to a hedonic treadmill?

When people rate their happiness, are they rating on an absolute scale that reflects a real treadmill effect, or are people simply asking if they are happy compared to what they know?

It seems obviously possible to raise national happiness. One existence proof is that there are very clearly regimes, policies and circumstances that make people very unhappy, and you can do the opposite of those things, at least dodging them.

Also there are things that consistently raise happiness and that vary in frequency greatly over time, for example being married and having grandchildren.

In any case, via MR (via Kevin Lewis) we have a new paper.

Abstract: We revisit the famous Easterlin paradox by considering that life evaluation scales refer to a changing context, hence they are regularly reinterpreted.

We propose a simple model of rescaling based on both retrospective and current life evaluations, and apply it to unexploited archival data from the USA.

When correcting for rescaling, we find that the well-being of Americans has substantially increased, on par with GDP, health, education, and liberal democracy, from the 1950s to the early 2000s.

Using several datasets, we shed light on other happiness puzzles, including the apparent stability of life evaluations during COVID-19, why Ukrainians report similar levels of life satisfaction today as before the war, and the absence of parental happiness.

Tyler Cowen: To give some intuition, the authors provide evidence that people are more likely engaging in rescaling than being stuck on a hedonic treadmill. I think they are mostly right.

This makes tons of sense to me. You get revolutions of rising expectations. There are definitely positional effects and treadmill effects and baseline happiness set points and all that to deal with, but the Easterlin Paradox is a paradox for a reason and things other than income vary as well.

That doesn’t mean life is getting better or people are getting happier. It can also go the other way, and I am very open to the idea that happiness could be declining (or not) in the smartphone era with kids not allowed to breathe outside, and everything else that causes people to feel bad these days both for good and bad reasons. But yeah, from the 1950s to the 1990s things seem like they very clearly got better (you could also say from the 1500s to 1990s, with notably brief exceptions, or earlier, and I’d still agree).

Camp Social is part of a category of offerings where adults go to sleepaway camp with a focus on making friends, complete with bunk beds and color wars and in one case a claimed 75% return rate, although also with staying up until 1: 30 getting drunk. The camp counselors are concierges and facilitators. Cost is $884 for two nights and three days, which seems rather quick for what you want to accomplish?

I do buy that this is a good idea.

Radiation is dangerous, but it is a lot less dangerous than people make it out to be, and we treat this risk with orders of magnitude more paranoia than things like ordinary air pollution that are far more deadly.

Ben Southwood: The life expectancy of someone hit with 2,250 millisieverts of radiation in Hiroshima or Nagasaki was longer than the average Briton or American born in the same year. Today in Britain we spend billions controlling radiation levels more than 100,000 times smaller than this.

2,250 millisieverts is a lot of radiation, like getting 225 full-body CT scans in one go. I don’t think anyone would recommend it. But it shows how ridiculous it is that we spend so much time, effort, and money on radiation levels of 1msv or 0.1 msv per year.

Andrew Hammel reports that the Germans are finally on the verge of losing their War on Air Conditioning, as in allowing ordinary people to buy one, because normies actually experienced air conditioning and are not idiots. The standard ‘urban haute bourgeoisie’ are holding out on principle, because they think life is about atoning for our sins and because they associate things like air conditioning with wasteful Americans. As you would expect, the alternative ‘solutions’ to heat wind up being exponentially more expensive than using AC.

I do note that they have a point on this one:

Andrew Hammel: First of all, *every oneof these people has a story about visiting the USA and nearly freezing to death in an over air-conditioned store or office. Every. Damn. One. I can predict exactly when they will wheel out this traumatic tale, I just let it unfold naturally.

I mean, I have that too, to the point that it is a serious problem. This happens constantly in Florida. Even in New York’s hotter summer days, I have the problem that there is nothing I can wear outside while walking to the restaurant, that I also want to be wearing once I sit down at the restaurant. It is crazy how often Americans will use the AC to make places actively too cold. We could stand to turn it down a notch.

Or rather, ‘the’ good news, as Elizabeth Van Nostrand lays out how Church Planting works and finds it very similar to Silicon Valley startups.

A counterargument to last month’s claim about rapidly declining conscientiousness. Conscientiousness has declined far more modestly, the decline here is still seems meaningful but is very is not be a crisis. What John did to create the original graph turns out to have been pretty weird, which was show a decline in relative percentile terms that came out looking like a Really Big Deal.

Cartoons Hate Her! is on point that germs are very obviously real and cause disease but quite a lot of people’s specific worries about vectors for being exposed germs and the associated rituals are deeply silly if you stop to think about physics, especially compared to other things the same people disregard.

Sesame Street will give its largest library to YouTube as of January 2026 featuring hundreds of episodes. It is not a perfect program, but this is vastly better than what so many children end up watching. I echo that it would be even better if we included classic episodes as well.

Indeed, we should be putting all the old PBS kids shows on YouTube, and everything else that it would be good for kids to be watching on the margin. The cost is low, the benefits are high. There are low quality versions of the shows of my extreme youth available (such as Letter People and Square One TV) but ancient-VHS quality is a dealbreaker for actually getting kids to watch.

What TV show had the worst ending? There are lots of great answers but the consensus is (in my opinion correctly) Game of Thrones at #1 and Lost at #2.

After that it gets more fractured, and the other frequent picks here I am in position to evaluate were mostly bad endings (HIMYM, Killing Eve, Enterprise, Battlestar Galactica) but not competitive for the top spot. Dexter came up a lot but I never watched. Supernatural came up a bunch, and I’m currently early in its final and 15th season and is it weird this makes me want to get to the end more not less? Better a truly awful end than a whimper?

To be the true worst ending, it has to not only be awful but take what could have been true greatness and actively ruin the previous experience. You need to be in the running for Tier 1 and then blow it so badly you have to think about whether it even stays in Tier 2 because they poisoned everything. That’s why Game of Thrones and Lost have to be so high.

Indeed those two are so bad that they substantially hurt our willingness to invest in similar other shows, especially Lost-likes, which is enforcing the good discipline of forcing for example Severance to assure us they have everything mapped out.

(Briefly on the others: While at the time I thought HIMYM’s ending was as bad as everyone thinks, on reflection it has grown on me and I think it is actually fine, maybe even correct. Killing Eve’s ending wasn’t good exactly, but I didn’t feel it ruined anything, it was more that all of season 4 was a substantial decline in quality. Battlestar Galactica was rage inducing but I understand why they did what they did and that mostly made it okay, again mostly the show started fantastic and was dropping off in quality generally. Enterprise ended bad, but again not historically bad, whereas the show wasn’t getting bad, and mostly the frustration was we weren’t done.

I heard the claim recently that Lost’s ending is aging well, as it suffered from the writers assuring us that they wouldn’t do the thing they did, whereas now looking back no one much cares. There’s that, but I still find it unsatisfying, they said they wouldn’t do it that way for a reason, and the worse offense was the total failure to tie up loose ends and answer questions.

Scott Sumner claims the greatest age of cinema was 1958-1963.

Scott Sumner: The public prefers 1980-2015, as you say. The movie experts say the 1920s-1970s were the best.

This highlighted the ways in which our preferences strongly diverge.

Another big hint is that Sumner and the experts claim an extremely high correlation of director with quality of movie. Great directors are great, but so many other things matter too.

As an example, recently I watched Mulholland Drive for the first time, which Sumner says might be his favorite film. I appreciated many aspects of it, and ended up giving it 4/5 stars because it was in many senses ‘objectively’ excellent, but I did not actually enjoy the experience, and had to read an explainer afterwards from Film Colossus to make sense of a lot of it, and even after understanding it a lot of what it was trying to do and say left me cold, so I didn’t feel I could say I ‘liked’ it.

From what I can tell, the public is right and the ‘experts’ are wrong. Also I strongly suspect that We’re So Back after a pause of timidity and sequilitius and superheroes.

Scott Sumner: There are two films that should never, ever be watched on TV. One is 2001 and the other is Lawrence of Arabia. If you saw them on anything other than a very big movie theatre screen, then you’ve never actually seen them.

I haven’t seen 2001 regardless, but on Lawrence of Arabia I can’t argue, because I attempted to watch it on a TV, and this indeed did not result in me seeing Lawrence of Arabia, because after half an hour I was absolutely bored to tears and could not make myself continue. There was a scene in which they literally just stood there in the sand for about a minute with actual nothing happening and I get what they were trying to do with that but it was one thing after another and I couldn’t even, I was out.

What I am confused by is how it would have improved things to make the screen bigger, unless it would be so one would feel forced to continue watching?

Here are his 13 suggestions for films to watch, although I have no idea how one would watch Lawrence of Arabia given it has to be on a big screen?

Vertigo, The Man Who Shot Liberty Valance, Touch of Evil, Some Like It Hot, Breathless, Jules and Jim, Last Year in Marienbad, High and Low, The End of Summer, 8 1/2, L’Avventura, The Music Room, Lawrence of Arabia.

I tried to watch High and Low, and got an hour in but increasingly had the same sense I got from The Seven Samurai, which is ‘this is in some objective senses a great movie and I get that but I have to force myself to keep watching it as outside of moment-to-moment it is not holding my interest’ except with more idiot plot – and yes I realize some of that is cultural differences and noticing them is the most interesting thing so far but I’m going to stick with idiot plot anyway. In addition to the idiot aspects, it really bothers me that ‘pay or pretend to pay the ransom’ is considered the obviously moral action. It isn’t, that is terrible decision theory. The moral action is to say no, yet there is not even a moment’s consideration of this question by anyone.

If the above paragraph is still there when you read this, it means I was unable to motivate myself to keep watching.

Jeff Yang explains some of the reasons Chinese movies tend to bomb in America, in particular the global hit Ne Zha 2. Big Chinese movies tend to be based on super complex Chinese traditional epic stories that Chinese audiences already know whereas Americans haven’t even seen Ne Zha 1. American stories have clear structure, understandable plots, payoffs for their events, central characters, and a moral vision that believes in progress or that things can be better. And they try to be comprehensible and to maintain a tonal theme and target market. Chinese movies, Yang reports, don’t do any of that. Effectively, they assume the audience already knows the story, which is the only way they could possibly follow it.

It’s as if Marvel movies were the big hits, and they didn’t try to be comprehensible to anyone who didn’t already know the characters and comics extensively? Certainly there are some advantages. It might be cool to see the ‘advanced’ directors cuts where it was assumed everyone had already either read the comics extensively or watched the normal version of the film?

As Jeff says, if they can make money in China, then sure, why not do all this stuff that the Chinese audiences like even if it alienates us Westerners. There are enough movies for everyone. It does still feel like we’re mostly right about this?

Like everyone else I think Hollywood movies are too formulaic and similar, and too constrained by various rules, and thus too predictable, but those rules exist for a reason. When older movies or foreign movies break those rules, or decide they are not in any kind of hurry whatsoever, it comes at a cost. I don’t think critics respect those costs enough.

I strongly agree with Alea here and I am one of the ones who want to stay away:

Alea: Novels with an empty mystery box should be explicitly tagged so I can avoid them. 110% of the joy of reading comes from uncovering all the deep lore and tying up every loose end. Some people get off on vague worlds and unfinished plots, and they should stay the fuck away.

I don’t especially want to go into deep lore in my spare time, but if you are going to convince me to read a novel then even more than with television you absolutely owe it to me to deliver the goods, in a way (with notably rare exceptions) that I actually understand when reading it.

As in: I know it’s a great book but if as is famously said, ‘you don’t read Ulysses, you reread Ulysses’ then you had me at ‘you don’t read Ulysses.’

And you definitely don’t read Game of Thrones until I see A Dream of Spring.

True facts about the whole ‘fleeing Earth’ style of story:

Ben Dreyfuss: The stupidest part of INTERSTELLAR is that the blight starts killing all the crops and after just a few decades they go “ah well, guess it won! Better leave earth. Hope we solve this magic gravity equation with the help of 5 dimensional beings and wormholes.”

“We can’t make okra anymore. Better go explore this all water planet where one hour is 7 years of time and this ice planet where water is alkaline and the air is full of ammonia.”

Pretty sure you can’t make okra there either, buddy.

Kelsey Piper: every single movie about people fleeing Earth involves displaying a mastery of technology which would obviously be more than sufficient to solve the problem they are fleeing Earth about

climate change is not going to make Earth less habitable than Mars so you can’t have people fleeing to Mars because of climate change, you just can’t.

‘there’s a supervolcano/asteroid induced ice age’ oh boy I have some news for you about Mars.

Daniel Eth: Just once I want a movie about people fleeing Earth to have the premise “there are trillions of people, and we have a per capita energy consumption of 100,000 kWh/yr, which is straining Earth’s ability to radiate the waste heat. We must now go to space to expand capacity”

Movie could have a real frontier vibe (space cowboys?) – “of course back in the old world (Earth), population and energy per capita are subject to bureaucratic regulations to prevent total ecosystem collapse; but in new worlds we can freely expand anew”

A recent different case of ‘I can’t help but notice this makes no sense’ was Weapons. The link goes to a review from Matthew Yglesias that I agree with, it does cool things with nonlinearity and the performances and cinematography are good except when you put it together in the second half the resulting actual plot, while consistent and straightforward, makes no sense.

Zvi Mowshowitz reviews Weapons while avoiding spoilers: When you’re in, writing or deciding to go to a horror movie, you make dumb decisions. It’s what you do.

The difference is to him this adds up to 3.5 stars, and to me it means 2.5 stars, once the holes and idiot balls became too glaring, I stopped being able to enjoy the film.

My other problem with Weapons was that the first two acts made me care about various characters and relationships that were rich and detailed and well-executed and acted, and then the third act didn’t care at all about those things, only about the main plot that did not make any sense. There might actually be a pretty great movie here in which the missing kids are a tragedy that never gets explained or solved because what matters is a different third act that focuses on how people react to it.

New Jersey looks to ban ‘micro bets,’ meaning sports bets about individual plays.

Erik Gibbs: The bill’s language defines a micro bet as any live proposition bet placed during an event that pertains specifically to the outcome of the next discrete play or action.

This restriction seems clearly good. I don’t know where the line should be drawn, but I am confident that ‘ball or strike’ bets are over the line.

It is a very light restriction – you can’t bet on a ball or strike or pass or run under this rule, but you can still bet on the outcome of an inning or drive. Bets on the next play have all the worst gambling attributes. They cost a lot individually, they resolve and compound super quickly, they are especially prone to addictive behavior.

Clair Obscur Expedition 33 finishes at Tier 2. It does a lot of things very right and I am very happy to have played it, despite some obvious issues, including some serious balance problems in Act 3.

If someone suddenly buys up the contract on Taylor Swift and Travis Kelce getting engaged from 20% to 40%, and you’re selling into it, yeah, good chance they know. Also this means yes, someone knew and traded on the information in advance. Cool. Oh, and congratulations to both of them, of course.

Sam Black has a new podcast about cEDH.

I don’t understand why Wizards of the Coast continues to be so slow on the banhammer in situations like Cauldron. We saw repeatedly exactly the broken format pattern, such as here where Cauldron starts out at 30% and then goes to 56% after six rounds, then a much larger majority of the top 8s. This continued long past the point where there was reasonable hope it would be fixed by innovation.

Mason Iange: Doesn’t it make sense that in a rotating format like standard, wotc wants people to have confidence in buying product and building decks? Literally no one is going to play standard if the best decks just get banned every 2 month.

Saffron Olive: The way I see is it there are two paths: you design cards conservatively and don’t need to ban anything, or you design cards aggressively and need to ban cards fairly often. Wizards is trying to design cards aggressively and never ban anything, which I don’t think is actually possible.

Patrick Sullivan: What you’re saying is true/relevant, but there are other considerations; the current state of affairs would clearly not be tolerated absent the stuff you’re mentioning. That’s why I think they should allow themselves to be as agile as possible regardless of what they decide to do.

Brian Kowal: The opposite of how I feel about rotating formats. I want it dynamic. I’d rather they make a balanced format. With a rotating format I want to feel like I can innovate. If it is solved I quickly lose interest. There are many formats that never rotate to protect investment.

I think ‘mix it up every time it is solved’ is going too far given how quickly we now solve formats, but the solution has to not be ‘play this deck or else.’ Yes, banning the best deck every two months would make you reluctant to invest in Standard, but effectively banning all but the best deck for months on end, or having to face an endless stream of the same overpowered nonsense even if you’re willing to sacrifice win rate to go rogue, is even worse.

They came out with an explanation and update on the 9th. A big part of this is that they screwed up timing the ban windows, and have a crazy high bar for doing “emergency” bans versus bans on announcement days. They are mitigating this going forward by adding more windows next year, one every major set release.

That points out how crazy the situation was. You’re going to release a set, and then not have a ban opportunity until after releasing the next set? That’s crazy.

Based on past experiences, I believe Brian Kowal is correct that an extended period of a miserable format, with bans that everybody knows have to happen but are extensively delayed, creates a point of no return, where permanent damage to the format and the game begins to accumulate.

Brian Kowal: There should be room in the ban policy for emergency bans. Perception has hit the point of no return. A significant portion of players do not want to touch Standard now. Rotation should be when we are creating players for the next year and this rotation lasts until January 2027! (I’m 80% on this. Somebody let me know if I’m wrong) Players are quitting Standard again to look for other games and formats. New players are choosing not to invest in it.

When format perception hits this state everybody knows something is getting a ban. So a lot of die hard competitives are even taking a break rather than buying 4 copies of the two most expensive cards in Standard.

The best way to go imo is to just suck it up and ban Cauldron immediately. Again, we all know it is happening anyway. Not taking action over and over again and just letting everybody suffer months of a bad format makes WOTC look like they don’t care.

Jenny: WotC took HOW long to decide to do nothing and ruin another Spotlight Series and RCQ season? Using the Arena ladder meta to judge the health of the format is *insane*

Pactdoll Terror: My 2-slot RCQ this Saturday in NYC sold 8 spots. I usually do 50. Someone who built Vivi to grind RCQs would be annoyed that it got banned, but Standard is DEAD locally. Weeklies aren’t launching, RCQs struggle to make money. Holding bans is bad for everyone except Vivi players.

Instead they’re going to do a strange compromise, and move up their next announcement date from November 24 to November 10, which still leaves two full months of this.

We should never have more than a month ‘in limbo’ where things are miserable and we know what is coming. Even if you decide to keep playing you are in an impossible position.

They say ‘Standard has not yet reached its final form’ but they are grasping at straws.

They say the Arena ladder is looking less awful. The Arena ladder is not real life, not only because the play level is low but also there’s nothing forcing the players to play the best deck. I learned that the hard way during the Oko era.

I get Carmen’s argument here that we ran the experiment and when you don’t have ban windows, you get constant speculation about potential bans and a lot of uncertainty, And That’s Terrible. You can’t fully embrace The Unexpected Banning. There needs to be a substantially higher bar outside of a fixed set of days.

The current situation was still ludicrous. While insufficiently competitive play is not as lopsided, that’s largely about card access and players wanting to have fun and of course not wanting to do this into a future ban. This ban would not be ‘from under players in a surprise move’ even if no formal warning was given. The idea that ‘we won’t make a move based on competitive play, only on non-competitive play, you competitors don’t much matter’ is definitely giving me even less desire to come back.

Which of course I get. Magic is not made for me. I’m just deeply sad about it.

I see the argument this isn’t a pure ‘do it today or else’ situation but it is an emergency. If I was Wizards, the moment it was clear we probably had a problem I would have created a new announcement date much closer in the future than two months, with the clear statement that at that time they would choose whether to ban Vivi, Caldron, both or neither. And then done it by now.

Pro Tour levels of cEDH (competitive commander) are an awesome thing to have exist, but seem to have a rather severe draw problem, because everyone knows how to play politics and how to force draws. Sam Black suggests making draws zero points, which I worry could create even more intense politics and feel bad moments but when 1-0-6 is a ‘great record’ then maybe it is time and it seems like the elimination rounds work fine?

Sam Black: The house games are more fun when we don’t play for draws. Similarly games in top 16 are more fun.

Ultimately, I don’t think any solution would satisfy me, since it is going to come down to pure politics and kingmaker decisions. One potential approach is to say that wins are 10, draws are 1, and we pair people accordingly, so taking the draw is not obviously good for you, it might be wiser to lose and get paired against others who aren’t playing for draws. In the 0-0-4 bracket I don’t like your winning chances, and you have to win at some point to make the cut.

Sam Black talks about the role of mediocre synergistic cards. You start with strong cards, and pick up the bad cards that work for you for free at the end. If the bad cards vanish, the lane is not open, go a different way. Only prioritize cards that have a high ceiling, and (almost) never take a consistently bad card in your colors that can’t make your deck much better when a pack contains a good card. Similarly, trying to read signals explicitly is overrated relative to taking good cards, which is underrated and serves the same purpose.

The exception (he seems to assumes in the modern era this won’t ever happen, which seems wrong to me) is if you are in danger of not having a deck, because you lack either enough cards or a key component, such that taking a usually bad card actually does provide substantial improvement.

Some cards that look bad, and have bad win rates, are instead good in the sense that they have high upside, but are being used badly by people who use them without the upside case. Sam’s example is a card that defaults to being a bad Divination but enables never running out of cards, so you can build your entire strategy around this, but if you put in your deck as a bad Divination then it will be bad.

Waymo is now offering service in Denver and is ready for Seattle as soon as they are permitted to do so. They’re doing experiments in Denver now with humans behind the wheel of about a dozen cars and Governor Polis is here for it. Planned cities include Dallas, Miami and Washington D.C. next year, and scouting ‘road trips’ have gone to Philadelphia and there are plans to go to Las Vegas, San Diego, Houston, Orlando and San Antonio.

Service in Denver will quickly reveal exactly how well Waymos can actually handle cold weather including snow. My prediction is it will go well, bet if you disagree. Hopefully it will help compensate for Denver’s struggling restaurants and its very high minimum wage.

As of the start of September, there are still only 2,000 Waymos: 800 in the San Francisco Bay Area, 500 in Los Angeles, 400 in Phoenix, 100 in Austin and ‘dozens’ in Atlanta.

As a point of comparison, San Francisco has ~1,800 taxi medallions, and an estimated 45,000 registered rideshare drivers, with Claude estimating there are typically 5,000 available rideshares at any given time, peaking in prime hours around 10,000.

Supervised Waymo diving has begun in NYC, where they have a permit to do so.

This continues the recent trend of noticing that holding back self-driving means tens of thousands of people a year will die that didn’t have to.

Ethan Mollick: It seems like there is not enough of a policy response to the fact that, with 57M miles of data, Waymo’s autonomous vehicles experience 85% less serious injuries & 79% less injuries overall than cars with human drivers.

2.4 million are injured & 40k killed in US accidents a year.

Think of EV policy and do long-term support: subsidies for R&D to bring down costs, incentives for including self-driving features, regulatory changes to make it easier to deploy, building infrastructure for autonomous-only vehicles (eg HOV lanes), independent testing.

Takes time.

There are many problems with this approach, including that it causes fixation on the lives saved versus cost and similar calculations, and also you sound like you are coming for people’s ability to drive. Whereas if you sell this purely as ‘Waymos are awesome and convenient and efficient and improve life greatly and also happen to be actually safe on top it’ then I think that’s way better than ‘you are killing people by getting in the way of this.’

Alice From Queens: Self-driving cars are like the new weight loss drugs.

Their value is so large, so obvious, and so scalable, that we can confidently predict their triumph regardless of knee-jerk cultural resistance and their wildly exaggerated downsides.

Yes, I’ve been saying the same thing for years. Because it still needs saying!

I mean, they totally are killing people by getting in the way, but you don’t need that.

Mostly you need to make people believe that self-driving is real and is spectacular.

Matthew Yglesias: I keep meeting people who are skeptical self-driving cars will ever happen.

I tell them I took one to the airport in Phoenix several months ago, did a test ride in DC, they’re currently all over San Francisco, etc and it’s blank stares like I’m telling them about Santa.

My model of what is holding things back for Waymo in particular right now is that mainly we have a bottleneck in car manufacturing, and there’s plenty of room to deploy a lot more cars in a bunch of places happy to have them.

Longer term, we also have to overcome regulatory problems in various places, especially foolish blue cities like New York and Boston, but I find it hard to believe they can hold out once the exponential gets going and everyone knows what they are missing. Right now with only a few hundred thousand rides a week, it’s easy to shrug it off.

Thus I think PoliMath might be onto something here:

PoliMath: I suspect Waymo doesn’t *wantthere to be a policy response to this data b/c it will inevitably end with the left demanding we ban human drivers and there will be a huge backlash that damages Waymo’s business in a serious way.

Waymo is steadily winning, as in expanding its operations. The more it expands, the better its case, the more it will be seen as inevitable. Why pick a premature fight?

The fight is out there. Senator Josh Hawley is suddenly saying ‘only humans out to drive cars and trucks’ as part of his quest to ‘reign in’ AI, which is the Platonic worst intervention to reign in AI.

Waymos are wonderful already, but they also offer much room for improvement.

Roon: It is pretty telling that when you ride in a Waymo, you cannot give instructions to Gemini to play a song, change your destination, or drive differently. When one of the great gilded tech monopolies of the world does not yet have a cohesive AI picture, what hope has the broader economy?

Eliezer Yudkowsky: AI companies are often so catastrophically stupid that I worry that Gemini might in some way be connected to the actual car. Oh wait, you explicitly want to be able to request that the car drive differently?

I do not want Gemini to be controlling the vehicle or how it drives, but there are other things that would be nice features for integration, and there are other quality of life improvements one could make as well. For now, we keep it clean and simple.

The Seth Burn 2025 Football Preview is here, along with the podcast discussion.

If you must hire a PR agency, this from Lulu Cheng Meservey strikes me as good basic advice on doing so.

Should you consider retiring to places like Italy, perhaps under a deal to go to a small town to get a 7% flat tax regime for 10 years? Is there a good deal to be struck where American retirees help fund what remains of Europe, especially given that translation is rapidly becoming seamless and these places are indeed very nice by all accounts? Paul Skallas here describes Southern Europe as ‘dirt cheap,’ citing this chart:

I am deeply skeptical that the discounts are this large, and my AI sanity check confirmed the savings are real but relatively modest. Also consider what ‘comfortable retirement’ means in places that (for example) won’t let you buy an air conditioner. But yeah, if you only have modest savings it seems like a good thing to consider.

YouTube Premium is an ideal product. For $10 a month you get no ads, creators get paid, and the variety of content is phenomenal. Yes, you could use AdBlock to get around it in many cases, and many will do that, but this is what the internet is supposed to look like.

Maxim Lobovsky: Not only is YouTube Premium great, it’s one of the few major ad-supported businesses offering a paid alternative. Paid social media is one of the only plausible solutions to the algorithm-driven polarization/rage-baiting/lowest-common-denominator content death spiral.

The problem is that you can’t then subscribe individually to everything else, because that adds up fast. Give me a unified YouTube Premium style subscription, please.

Yes, the failure to shut down TikTok despite a law making it illegal that was upheld by the Supreme Court 9-0 is rather insane. Trump is flat out refusing to enforce the ban and extending the deadline indefinitely, you can speculate as to why.

Downvotes, in some form, are a vital part of any social platform that has upvotes, both to maintain civility and maintain good incentives. If you can easily express pleasure there needs to also be an easy way to express displeasure. Dan Luu gives one reason, which is that otherwise people will write nasty comments as a substitute. The other reason is that otherwise maximizing for toxoplasma of rage and extreme reactions to get engagement wins and crowds other actions out. If you are going to do rankings, the rankings on LessWrong and also Reddit mostly seem quite good, and those are the only places where somewhat algorithmic feeds seem to do well.

Emmett Shear: The belief that downvotes are “uncivil” was one of the most common delusions I have encountered while working in social media.

Oliver Habryka: Yep, one of the things I always considered most crucial to maintain with LW 2.0. When I was shopping around for forum software alternatives when we started building LW 2.0 this ruled out like 80% of the options on the market.

Cremieux reports he was suspended from Twitter for a day for saying that Tea app had been hacked, which was called ‘posting other people’s private information without their express authorization and permission,’ except he did not do this or link to anyone who did do it (he said ‘you can go download 59.3 GB of user selfies right now’), whereas people who do expose such info often get ignored. He went warpath, citing various laws he asserts Twitter is breaking around the world.

(The link in the screenshot below takes you back to the post itself.)

Lewis: meanwhile post doxxing [someone’s] address was never removed. 2.5M views. reported it and DM’d Nikita, never heard back on either.

Sin: My contribution [which is literally a map containing the location with a giant arrow pointing to it saying it is where this person lives].

I saw this over a week later. Still there.

Elon Musk made a lot of mistakes with Twitter, but also did make some very good changes. One of them is that likes are now private. This damages an outsider’s ability to read and evaluate interactions, but it takes away the threat of the gotcha when someone is caught liking (or even not liking!) the wrong tweet and the general worry about perception, freeing people up to use them in various ways including to acknowledge that you’ve seen something, and to offer private approval.

It’s very freeing. When likes were public, which also means it was public what you didn’t like, I decided the only solution to this was to essentially not use the like button. Which worked, but is a big degrading of usefulness of Twitter.

Redaction: It really is insane how simply Hiding Likes On Twitter meaningfully shifted the overton window of the American political landscape

Samo Burja: I underestimated the impact change at the time. I think I thought preference falsification was much less pervasive than it was.

Meanwhile, in other contexts, it is still very much a thing to talk about who has liked which Instagram posts. This is exactly as insufferable as it sounds.

Every time Nikita tries to make me feel better about Twitter I end up feeling worse.

Nikita Bier (Twitter): The first step to eliminating spam is eliminating the incentive.

So over the last week, I have gone deep down the rabbit hole of X spam:

I am now in 3 WhatsApp groups for financial scams. I have become their friends. I know about their families. I cannot blow my cover yet.

What is the goal exactly? How would befriending them help? We already all know exactly how to identify these scams and roughly how they work. Understanding more details will not help Nikita or anyone else do anything. You think you’re going to do enough real world takedowns and arrests that people are scared to do scams, or something? How about instead we do basic filtering work?

Or, when he posts this:

Or this:

Eli: Twitter should include 3 schizophrenic reply guys and 1 egirl with Premium +

Nikita Bier: We did the math and that’s what retains a user.

He kids, but kid enough times in enough ways with enough detail and you’re not fully kidding. It is very clear that Twitter is doing a lot of the Goodhart’s Law thing, where short term feedback metrics are being chased without much eye on the overall experience. Over time, this goes to quite bad places.

Also, yeah, this is not okay:

Mike Solana: I truly believe blocking is a right, and I would never go after someone for blocking me for any reason. but you should not then be able to unblock, comment on a post of mine, and immediately REBLOCK so I can’t respond. in this case, I deserve at least 24 hours to roast your ass.

There are any number of obviously acceptable solutions to this. I like the 24 hours, where if you do something that you couldn’t do while they are blocked, your reblock is delayed for a day.

Local coffee shop sets up a bot farm with hundreds of phones to amplify their messages on Instagram.

Vas: If a simple coffee shop has a bot farm with 100s of phones to amplify their message, please consider what a foreign agency or adversarial operator is running on your favorite social media platform.

Especially today, please consider that the opinions you read, the calls to violence you hear, and the news you digest, are all an operation done to sow hatred in your mind and your soul.

Scott Sumner uses his final EconLib post to remind us that almost everything is downstream of integrity. Without informal norms of behavior our laws will erode until they mean almost nothing, and those informal norms are increasingly discarded. He cites many examples of ways things might (read: already did) go wrong.

I may never stop finding it funny the extent to which Trump will seek out the one thing we know definitively is going badly, then and choose that to lie and brag about.

As in, how is the DC crackdown going? I only as of writing this know for sure that restaurant reservations were down, although it turns out not down as much as initially reported once you control for restaurant week but 7% is still a lot. So of course…

Donald Trump: People are excited again. Going to restaurants again [in DC]. The restaurant business, you can’t get into a restaurant.

Trump attempted to fire Federal Reserve Governor Lisa Cook ‘for cause,’ setting up a legal fight. Cook was not about to leave quietly.

Initial market reaction was muted, the dollar only declined 0.3% and gold only rose 0.6%, likely because it was one escalation among many and it might fail, but this is a direct full assault on central bank independence, and central bank independence is a really big deal.

Jonnelle Marte and Myles Miller (Bloomberg): While a president has never removed a Fed governor from office, one can do so for cause. Laws that describe “for cause” generally define the term as encompassing three possibilities: inefficiency; neglect of duty; and malfeasance, meaning wrongdoing, in office.

What was this ‘cause’?

Trump had earlier called for Cook’s resignation after Federal Housing Finance Agency Director Bill Pulte alleged she lied on loan applications for two properties — one in Michigan and one in Georgia — claiming she would use each property as her primary residence to secure more favorable loan terms.

Trump said it was “inconceivable” that Cook was not aware of requirements in two separate mortgage applications taken out in the same year requiring her to maintain each property as her primary residence.

That’s it. There are no additional claims. Only the claim that she claimed one place would be a primary residence, and then claimed a different primary residence.

Pulte, in a statement posted to social media, thanked Trump for removing Cook. “If you commit mortgage fraud in America, we will come after you, no matter who you are,” he wrote.

What about if you are President of the United States and have recently had a nine figure judgment against your ‘Trump’ organization entered against you for lying on mortgage applications? Are we coming for you?

Oh, and what if it turned out, as it has, that the claim against Cook simply isn’t true?

Aaron Fritschner: The mortgage fraud claim against Lisa Cook is false, per documents obtained by Reuters. Bill Pulte’s accusation, the sole pretext Trump used to fire her from the Fed, was that she claimed two homes as primary residence. These docs show she did not.

“The document, dated May 28, 2021, was issued to Cook by her credit union in the weeks before she completed the purchase and shows that she had told the lender that the Atlanta property wouldn’t be her primary residence.”

“documentation reviewed by Reuters for the Atlanta home filed with a court in Georgia’s Fulton County, clearly says the stipulation exists “unless Lender otherwise agrees in writing.” The loan estimate, a document prepared by the credit union, states “Property Use: Vacation Home”

Lisa Cook also didn’t claim a tax credit for primary residence on the second home and declared it as a second home on official federal government documents when she was being considered for a role on the Fed. A real master criminal.

Also her mortgage rate was 3.5%, modestly higher than the going rate at the time.

If you are going to try and fire a Federal Reserve President for cause, something that has not happened (checks notes, by which I mean GPT-5) ever, thus endangering faith in Fed independence and the entire financial system, you might want to follow due process, or at least confirm that your accusation is true? As opposed to demonstrably false?

A lot of people are understandably highly outraged about this, as Adam Tooze partly covered right after the attempted firing. This comes on the heels of firing the head of the Bureau of Labor Statistics because Trump didn’t like the statistics.

A reminder that yes, there is at least one clear prior case of a crazy person destroying a nation’s health that parallels RFK Jr, as in South Africa where their President denied drugs to AIDS patients.

Yes, all the various ‘honesty taxes’ our government imposes (also see this highlighted comment) are extremely pernicious and do a lot more damage than people realize. We teach people they have to lie in order to get food stamps, and they (just like LLMs!) learn to generalize this, everything impacts everything, our society is saying lying is okay and lying to the government is mandatory, you can’t isolate that. You don’t get a high trust society that way, although we are remarkably high trust in some ways despite this.

Most of the time, the correct answer is not to enforce the rules as written even if we could do so, instead the correct answer is to remove or heavily modify the rule. Our rules are tuned to the idea they won’t be enforced, so it is likely enforcing them would not go well. Then there are exceptions, such as primary residence mortgage fraud.

Aaron Bergman: I think ethics- and integrity-pilled people need to have a better theory of when it’s cool to lie to *institutions

The “lying to a human” vs “lying to institution” distinction is real and important btw, the bar for the latter is much lower

Oliver Habryka: Yeah, I agree with this. I think lying to institutions is frequently fine, often roughly proportional to how big they are, though there are also other important factors.

I don’t have a great answer to exactly when this all makes it okay to lie to corporations or governments and on forms. My guess is it is roughly ‘do not break the social contract.’ But if this is something where is no longer (or never was) a social contract, and no one would look at you funny if you were doing it in the open, then fine.

If you notice you are very clearly expected to lie (including by omission) or do a fake version of something, that the system is designed that way, then you have little choice, especially if you are also forced to deal with such institutions in order to get vital goods or services.

Idaho suicide hotline is forced to ask teens who call to get parental consent due to a law passed last year requiring consent for almost all medical treatments for minors. As you would expect, most of them hang up.

Are Trump’s tariffs helping domestic manufacturing? What do the domestic manufacturers say about this?

UK arrests comedian for speech, where the speech was done on American soil.

I try to keep a high threshold for criticism but it does seem like Trump ordered a bunch of people murdered (some might use the term ‘war crime’ but I prefer plain language and also there was no war involved, the ‘war on drugs’ is not a war) on the high seas with absolutely no legal basis for doing so? He ran the plot of Clear And Present Danger straight up in the open? You didn’t know there were drugs involved, and even if you did you can’t go around blowing up boats purely because there were drugs involved?

Especially when you had the power to interdict and instead decided to ‘send a message’ as per Secretary of State Marco Rubio by blowing up the boat with no warning because the boat (that you could have interdicted) posed an ‘immediate threat to the United States’? And a letter from the White House to Senators Mike Johnson and Chuck Grassley that confirms, yep, straight up murder and likely we will murder again? And JD Vance seems to confirm that this is straight up murder?

JD Vance: Killing cartel members who poison our fellow citizens is the highest and best use of our military.

Rand Paul: JD “I don’t give a shit” Vance says killing people he accuses of a crime is the “highest and best use of the military.”

Did he ever read To Kill a Mockingbird?

Did he ever wonder what might happen if the accused were immediately executed without trial or representation??

What a despicable and thoughtless sentiment it is to glorify killing someone without a trial.

I’m sincerely and deeply confused what makes this not straight up murder and have not seen any serious arguments for why it would be anything else, as opposed to ‘yes it is murder and I really like murder for us here, yay this murder.’ It also seems, to the extent such points are relevant in 2025, like a very clear ‘high crime and misdemeanor.’

Apple’s new iPhone 17 Pro Max seems like a substantial improvement over the iPhone 16 Pro Max. You get 50% more ram, at least twice as many camera pixels, better cooling, a substantially better battery, and a new faster chip with GPUs ‘designed for AI workloads.’ I’m going to stick with my Pixel 9 Fold, the only feature on iPhones that is compelling to me at all is avoiding anti-Android discrimination, hell of a business model, but those are nice upgrades.

Apple Vision Pro is making small inroads in specialized workplaces that can exploit spatial computing, including things like exploring potential new kitchens or training airline pilots. It is expensive, but if it is the best tool, it can still be worth it. The rest of us will be waiting until it is lighter, better, faster and cheaper.

Meta had some issues with child safety when using its smart glasses, so whistleblowers report that they tried to bury it or shield it from public disclosure in various ways. This continues the pattern where:

  1. Meta has a safety problem.

  2. When Meta tries to have internal clarity and do research on the dangers of its products, people leak that information to the press, details get taken out of context and they get hauled before Congress.

  3. When Meta responds to this by avoiding clarity, and suppressing the research or ignoring the problem, they get blamed for that too.

I mean, yes, why not simply actually deal with your safety problems is a valid response, but the incentives here are pretty nasty.

The central accusation is that the company’s lawyers intervened to shape research into risks from virtual reality, but I mean it would be insane for Meta not to loop the lawyers in on that research. If we are going to make Meta blameworthy, including legally, for doing the research, then yes they are going to run the research by the lawyers. This is a failure of public policy and public choice.

That doesn’t make the actual problems any less terrible, but it sounds like they are very standard. Kids were bypassing age restrictions, and when interacting with others they would get propositioned. It seems like the accusation is literally ‘Meta let its users interact with each other, and sometimes those users said or did bad things.’

Experts have long warned that virtual reality can endanger children by potentially exposing them to direct, real-time contact with adult predators.

It is remarkable how consistently even the selected examples don’t involve VR features beyond allowing users to talk? I’m not saying you don’t need to have safeguards for this, but it all sounds very similar to the paranoia and statistical illiteracy where we don’t let children participate in physical spaces anymore.

I love this report of a major problem running the other way, to which, I mean, fair:

In a January 2022 post to a private internal message board, a Meta employee flagged the presence of children in “Horizon Worlds,” which was at the time supposed to be used only by adults 18 and over. The employee wrote that an analysis of app reviews indicated many were being driven off the app because of child users.

I’m not saying Meta handled any of this perfectly or even handled it well. But there’s no smoking gun here, and no indication that they aren’t taking reasonable steps.

Meta is also being sued and accused of violating and FTC agreement on WhatsApp privacy and account protection, claiming 500,000 WhatsApp accounts are stolen daily.

Matthew served, and Nate served back, so now it’s on.

Nate Silver: Academic journals might be a lost cause but they’d probably be better if you had some non-academic practitioners serving as reviewers. Journalists have their problems too but they have much better bullshit detectors, for instance.

The most important research paper of the past 10 years is the Google transformer paper (“Attention Is All You Need”) and it was written by non-academics and published in an open-access journal.

You ran some cool regression analysis OK great. Make some nice graphics and put it on a Substack. Engaging headline, 1500-2500 well-written words. That’s literally 100x faster than trying to publish in a journal and it’s better peer review anyway.

Matthew Sitman: Very, very occasionally an exceptional generalist intellectual or particularly well-informed journalist might be able to see a problem with a paper that an academic close to the subject doesn’t, but this radically underestimates the uses of expertise/familiarity with a literature.

As someone who’s been an academic and now talks/writes about ideas for non-specialists, a difference is that academics, ideally, know what they don’t know, are aware of questions asked/answered previously, etc; if that can produce tunnel vision, well, they’re trying to dig deep.

Nate Silver: Well, I know a lot about statistical inference, have been doing it for 25 years, have faced a lot of public scrutiny, and in the fields where I also have a lot of domain knowledge, probably half of published papers have obvious fatal flaws that render them unfit for publication.

Maybe I’m a weird outlier, but the peer review process is obviously broken. Maybe it’s better in the fields I *don’tknow well. But I’d be surprised if that’s true.

Aella: People don’t understand how much of a joke the current state of peer review is. It’s extremely bad.

It’s bad enough that at one point I was suggesting to someone “why don’t you just deliberately insert mistakes so they can feel satisfied about finding those and don’t end up fucking with the rest of the paper”

St. Motweb: This is actually a strategy that many academics use.

SolDad: I unironically do this in my papers, sort of. Not inserting new stuff, but leaving fairly-obvious but not super important work undone as “low hanging fruit” for the reviewers to notice and ask for.

This suggests a wager.

Select a field. A neutral party (or an LLM with an agreed upon prompt) selects 10 recent papers that meet some criteria for being Proper Papers In Good Journals and that assert some statistical finding and thus could in theory be flawed.

If Nate Silver can find a fatal flaw in at least 2 of the 10 papers, as evaluated by an agreed neutral judge, then he wins. If not, he loses. This should cover both sides: Two is enough that the system is obviously fatally flawed, and Nate says he can average five.

This is not a statement that the first best solution to peer review involved outsiders like Nate Silver reviewing papers. That seems obviously wrong. It is a claim that the current solution is so utterly terrible that outsider review would be a big improvement.

Indeed, ‘put your ideas out on the internet and let people critique them’ is the actual essence of true peer review, and far superior in practice to the formal version in 2025.

I am reminded of when I wrote a detailed response to a detailed response to AI 2027. Titotal accused AI 2027 of not having gone through ‘peer review’ and then proceeded to do peer review of AI 2027. Which was great, we thank Titotal for his service here, and I in turn then also contributed.

As I said then:

This is the peer! This is the review! That is how all of this works! This is it working!

Rob Bensinger is latest to note that we could do way better on a wide array of problems if we could improve discourse norms, and this could be a high impact play. That doesn’t mean we know how to pull it off. As he notes, prediction markets have been somewhat helpful, but seem unlikely to be the full game changer we need. Also as he notes, this would be great to pull off but there’s an attractor that causes this to look more relatively doable than it is, which can trick people into focusing on it more than they should relative to other interventions.

Kelsey Piper provides her overview of the findings that Giving People Money on a monthly basis in America does not seem to improve most outcomes, including child outcomes. They’re not ‘blowing’ the money on vices, but people give back a lot of it by working less, and while they tell stories about how great things are, most of the statistics don’t improve.

She then points us to a conservative critique of her analysis by Charles Lehman. I agree with Charles that the criticism ‘maybe the gains don’t show up in the measurements’ is rather silly, unless you can point to a specific policy aim that isn’t being measured, and explain why you have hope for that one despite the others not showing up.

I also appreciated Charles saying that for American purposes, a study of a social intervention in Africa should be treated similarly to when biologists say something ‘works in vitro,’ as conditions are so radically different. The synthesis would be that ‘give people money’ is highly useful at improving various outcomes when those people have so little money that they risk starvation, but not that far beyond that, and existing interventions here already take us above the threshold.

We definitely need to reconcile our model of how this works with not only the null results in these studies, but also the other null results from many other programs.

One reason to be suspicious of ‘policy mostly can’t help’ is that if you propose ‘policy mostly can’t hurt’ or even ‘getting rid of existing policies and enforcement mostly can’t hurt’ then most people will disagree with you. So at minimum, you can help by not hurting, and you should find the extreme asymmetry suspicious.

I do have one policy objective that I am confident this does help with if it is reliable and sustained, which is fertility. I’m sticking by the estimate that for every ~$270k in value (which need not be cash) you transfer to parents, you get one additional birth. This is one area where anticipation of money, or rather anticipation of having the necessary resources of all types, definitely changes behavior.

I concur with the consensus view that this post from Lennox about trying to sell Marx to EAs backfiring spectacularly is a gem of a read. You get such fun as Lennox encountering the Socialist Calculation Debate in its purest form:

Lennox: But when I looked at what the EAs were actually doing, and the methods they were using to evaluate charities, it quickly became clear that this was not going to work. One look at a GiveWell spreadsheet filled my heart with dread. They were creating insanely detailed cost effectiveness estimates of different interventions, using probabilistic models that tried to account for every possible empirical and philosophical assumption you could think of.

It would be great to analyse policies that fundamentally transform the economy at this level of detail, but there were a couple of problems. First, it’s impossible to create a useful model at that level of detail for transformative economic policies. Second, even if it were possible, there’s no way I could do it.

Fine. Lesson learned.

Except, of course, lesson not learned, because he didn’t then think ‘oh that is exactly why the socialist ideas I am advocating for won’t work.’ So he continues, and asks his sociological experts who love socialism. The same result happens again:

This was… disappointing to say the least. Here was a group of serious academics who had spent decades trying to make a rigorous case for socialism, and this is what they ended up concluding? That we don’t have the social technology to make it work, but maybe one day we will get there.

He then does the ‘finds smoking causes cancer, quits reading’ move, saying this means analytical Marxists had undermined themselves so maybe look at critical theory. Because, of course:

I’d assumed that if you want to solve a systemic problem like global poverty, you need to understand the root cause, and the root cause of poverty was, of course, capitalism.

However, understanding the root cause of something doesn’t automatically help you solve it.

The main mistake, of course, is that the root cause was not capitalism but instead the human condition. This had not yet entered Lennox’s hypothesis space. The other mistake was, yes, knowing the root cause of something does not always help solve it.

The evidence continued to mount.

Throughout undergrad, I would read sociological theorists and often find their arguments vague, opaque, and at times just poorly argued. Then I would read work by EAs and find it crystal clear, carefully argued, and generally well calibrated to the evidence.

The final nail in the coffin came while reading Scott Alexander’s essay Meditations on Moloch.

..

Looking back, I could have saved myself a lot of time. These fundamental problems with the project were probably obvious to many in the EA community and they would have told me the project was unlikely to be useful, if I’d had the courage to ask. But I avoided getting their feedback, partly because I figured they were ideologically blinded and would just dismiss anything critical of their movement.

That last line really is wonderful. Socialist refuses to get feedback from target audience because they are worried audience is ideologically blinded. Love it.

After that he is then able to do some self-reflection, also fun but less fun. Then in conclusion he comes around and notes that if you accept that the world is a swirling mess of misaligned incentives and coordination problems, then this completely undermines the Marxist political project.

That is indeed how the world works, so yes. Thank you. Well done, sir. Also, well done, sir, at the end:

Anyway, a couple of years after this happened I fell in love, and it was everything the poets and songwriters said it would be. So I guess the moral of the story is: if you find yourself tempted to construct elaborate ideological arguments in a vain attempt to make yourself feel smart and important, consider falling in love instead.

Discussion about this post

Monthly Roundup #34: September 2025 Read More »

macos-26-tahoe:-the-ars-technica-review

macOS 26 Tahoe: The Ars Technica Review

Game Overlay

The Game Overlay in macOS Tahoe. Credit: Andrew Cunningham

Tahoe’s new Game Overlay doesn’t add features so much as it groups existing gaming-related features to make them more easily accessible.

The overlay makes itself available any time you start a game, either via a keyboard shortcut or by clicking the rocketship icon in the menu bar while a game is running. The default view includes brightness and volume settings, toggles for your Mac’s energy mode (for turning on high-performance or low-power mode, when they’re available), a toggle for Game Mode, and access to controller settings when you’ve got one connected.

The second tab in the overlay displays achievements, challenges, and leaderboards for the game you’re playing—though only if they offer Apple’s implementation of those features. Achievements for games installed from Steam, for example, aren’t visible. And the last tab is for social features, like seeing your friends list or controlling chat settings (again, when you’re using Apple’s implementation).

More granular notification summaries

I didn’t think the Apple Intelligence notification summaries were very useful when they launched in iOS 18 and macOS 15 Sequoia last year, and I don’t think iOS 26 or Tahoe really changes the quality of those summaries in any immediately appreciable way. But following a controversy earlier this year where the summaries botched major facts in breaking news stories, Apple turned notification summaries for news apps off entirely while it worked on fixes.

Those fixes, as we’ve detailed elsewhere, are more about warning users of potential inaccuracies than about preventing those inaccuracies in the first place.

Apple now provides three broad categories of notification summaries: those for news and entertainment apps, those for communication and social apps, and those for all other kinds of apps. Summaries for each category can be turned on or off independently, and the news and entertainment category has a big red disclaimer warning users to “verify information” in the individual news stories before jumping to conclusions. Summaries are italicized, get a special icon, and a “summarized by Apple Intelligence” badge, just to make super-ultra-sure that people are aware they’re not taking in raw data.

Personally, I think if Apple can’t fix the root of the problem in a situation like this, then it’s best to take the feature out of iOS and macOS entirely rather than risk giving even one person information that’s worse or less accurate than the information they already get by being a person on the Internet in 2025.

As we wrote a few months ago, asking a relatively small on-device language model to accurately summarize any stack of notifications covering a wide range of topics across a wide range of contexts is setting it up to fail. It does work OK when summarizing one or two notifications, or when summarizing straightforward texts or emails from a single person. But for anything else, be prepared for hit-or-miss accuracy and usefulness.

Relocated volume and brightness indicators

The pop-ups you see when adjusting the system volume or screen brightness have been redesigned and moved. The indicators used to appear as large rounded squares, centered on the lower half of your primary display. The design had changed over the years, but this was where they’ve appeared throughout the 25-year existence of Mac OS X.

Now, both indicators appear in the upper-right corner of the screen, glassy rectangles that pop out from items on the menu bar. They’ll usually appear next to the Control Center menu bar item, but the volume indicator will pop out of the Sound icon if it’s visible.

New low battery alert

Tahoe picks up an iPhone-ish low-battery alert on laptops. Credit: Andrew Cunningham

Tahoe tweaks the design of macOS’ low battery alert notification. A little circle-shaped meter (in the same style as battery meters in Apple’s Batteries widgets) shows you in bright red just how close your battery is to being drained.

This notification still shows up separately from others and can’t be dismissed, though it doesn’t need to be cleared and will go away on its own. It starts firing off when your laptop’s battery hits 10 percent and continues to go off when you drop another percentage point from there (it also notified me without the percentage readout changing, seemingly at random, as if to annoy me badly enough to plug my computer in more quickly).

The notification frequency and the notification thresholds can’t be changed, if this isn’t something you want to be reminded about or if it’s something you want to be reminded about even earlier. But you could possibly use the battery level trigger in Shortcuts to customize your Mac’s behavior a bit.

Recovery mode changes

A new automated recovery tool in macOS Tahoe’s recovery volume. Credit: Andrew Cunningham

Tahoe’s version of the macOS Recovery mode gets a new look to match the rest of the OS, but there are a few other things going on, too.

If you’ve ever had a problem getting your Mac to boot, or if you’ve ever just wanted to do a totally fresh install of the operating system, you may have run into the Mac’s built-in recovery environment before. On an Apple Silicon Mac, you can usually access it by pressing and holding the power button when you start up your Mac and clicking the Options button to start up using the hidden recovery volume rather than the main operating system volume.

Tahoe adds a new tool called the Device Recovery Assistant to the recovery environment, accessible from the Utilities menu. This automated tool “will look for any problems” with your system volume “and attempt to resolve them if found.”

Maybe the Recovery Assistant will actually solve your boot problems, and maybe it won’t—it doesn’t tell you much about what it’s doing, beyond needing to unlock FileVault on my system volume to check it out. But it’s one more thing to try if you’re having serious problems with your Mac and you’re not ready to countenance a clean install yet.

The web browser in the recovery environment is still WebKit, but it’s not Safari-branded anymore, and it sheds a lot of Safari features you wouldn’t want or need in a temporary OS. Credit: Andrew Cunningham

Apple has made a couple of other tweaks to the recovery environment, beyond adding a Liquid Glass aesthetic. The recovery environment’s built-in web browser is simply called Web Browser, and while it’s still based on the same WebKit engine as Safari, it doesn’t have Safari’s branding or its settings (or other features that are extraneous to a temporary recovery environment, like a bookmarks menu). The Terminal window picks up the new Clear theme, new SF Mono Terminal typeface, and the new default 120-row-by-30-column size.

A new disk image format

Not all Mac users interact with disk images regularly, aside from opening them up periodically to install an app or restore an old backup. But among other things, disk images are used by Apple’s Virtualization framework, which makes it relatively simple to run macOS and Linux virtual machines on the platform for testing and other things. But the RAW disk image format used by older macOS versions can come with quite severe performance penalties, even with today’s powerful chips and fast PCI Express-connected SSDs.

Enter the Apple Sparse Image Format, or ASIF. Apple’s developer documentation says that because ASIF images’ “intrinsic structure doesn’t depend on the host file system’s capabilities,” they “transfer more efficiently between hosts or disks.” The upshot is that reading files from and writing files to these images should be a bit closer to your SSD’s native performance (Howard Oakley at The Eclectic Light Company has some testing that suggests significant performance improvements in many cases, though it’s hard to make one-to-one comparisons because testing of the older image formats was done on older hardware).

The upshot is that disk images should be capable of better performance in Tahoe, which will especially benefit virtual machines that rely on disk images. This could benefit the lightweight virtualization apps like VirtualBuddy and Viable that mostly exist to provide a front end for the Virtualization framework, as well as virtualization apps like Parallels that offer support for Windows.

Quantum-safe encryption support

You don’t have a quantum computer on your desk. No one does, outside of labs where this kind of technology is being tested. But when or if they become more widely used, they’ll render many industry-standard forms of encryption relatively easy to break.

macOS 26 Tahoe: The Ars Technica Review Read More »

will-tiktok-go-dark-wednesday?-trump-claims-deal-with-china-avoids-shutdown.

Will TikTok go dark Wednesday? Trump claims deal with China avoids shutdown.

According to Bessent, China agreed to “commercial terms” and “technical details” of a deal “between two parties,” but Xi and Trump still needed to discuss the terms—as well as possibly China’s demands to ease export controls on chips and other high-tech goods—before the deal can be finalized, Reuters reported.

ByteDance, TikTok’s current owner, which in the past has opposed the sale, did not immediately respond to Ars’ request to comment.

While experts told Reuters that finalizing the TikTok deal this week could be challenging, Trump seems confident. On Truth Social, the US president boasted that talks with China have been going “very well” and claimed that TikTok users will soon be “very happy.”

“A deal was also reached on a ‘certain’ company that young people in our Country very much wanted to save,” Trump said, confirming that he would speak to Xi on Friday and claiming that their relationship “remains a very strong one!!!”

China accuses US of “economic coercion”

However, China’s Ministry of Commerce spokesperson on Monday continued to slam US export controls and tariffs that are frustrating China. The spokesperson suggested that those trade restrictions “constitute the containment and suppression of China’s development of high-tech industries,” like advanced computer chips and artificial intelligence, NBC News reported.

“This is a typical act of unilateral bullying and economic coercion,” the spokesperson said, indicating it may even be viewed as a retaliation violating the temporary truce.

Rather than committing to de-escalate tensions, both countries have recently taken fresh jabs in the trade war. On Monday, China announced two probes into US semiconductors, as well as an antitrust ruling against Nvidia and “an anti-discrimination probe into US measures against China’s chip sector,” NBC News reported.

Will TikTok go dark Wednesday? Trump claims deal with China avoids shutdown. Read More »

china-rules-that-nvidia-violated-its-antitrust-laws

China rules that Nvidia violated its antitrust laws

A Chinese regulator has found Nvidia violated the country’s antitrust law, in a preliminary finding against the world’s most valuable chipmaker.

Nvidia had failed to fully comply with provisions outlined when it acquired Mellanox Technologies, an Israeli-US supplier of networking products, China’s State Administration for Market Regulation (SAMR) said on Monday. Beijing conditionally approved the US chipmaker’s acquisition of Mellanox in 2020.

Monday’s statement came as US and Chinese officials prepared for more talks in Madrid over trade, with a tariff truce between the world’s two largest economies set to expire in November.

SAMR reached its conclusion weeks before Monday’s announcement, according to two people with knowledge of the matter, adding that the regulator had released the statement now to give China greater leverage in the trade talks.

The regulator started the anti-monopoly investigation in December, a week after the US unveiled tougher export controls on advanced high-bandwidth memory chips and chipmaking equipment to the country.

SAMR then spent months interviewing relevant parties and gathering legal opinions to build the case, the people said.

Nvidia bought Mellanox for $6.9 billion in 2020, and the acquisition helped the chipmaker to step up into the data center and high-performance computing market where it is now a dominant player.

The preliminary findings against the chipmaker could result in fines of between 1 percent and 10 percent of the company’s previous year’s sales. Regulators can also force the company to change business practices that are considered in violation of antitrust laws.

China rules that Nvidia violated its antitrust laws Read More »

the-us-is-trying-to-kick-start-a-“nuclear-energy-renaissance”

The US is trying to kick-start a “nuclear energy renaissance”


Push to revive nuclear energy relies on deregulation; experts say strategy is misplaced.

In May, President Donald Trump signed four executive orders to facilitate the construction of nuclear reactors and the development of nuclear energy technology; the orders aim to cut red tape, ease approval processes, and reshape the role of the main regulatory agency, the Nuclear Regulatory Commission, or NRC. These moves, the administration said, were part of an effort to achieve American independence from foreign power providers by way of a “nuclear energy renaissance.”

Self-reliance isn’t the only factor motivating nuclear power proponents outside of the administration: Following a decades-long trend away from nuclear energy, in part due to safety concerns and high costs, the technology has emerged as a potential option to try to mitigate climate change. Through nuclear fission, in which atoms are split to release energy, reactors don’t emit any greenhouse gases.

The Trump administration wants to quadruple the nuclear sector’s domestic energy production, with the goal of producing 400 gigawatts by 2050. To help achieve that goal, scientific institutions like the Idaho National Laboratory, a leading research institute in nuclear energy, are pushing forward innovations such as more efficient types of fuel. Companies are also investing millions of dollars to develop their own nuclear reactor designs, a move from industry that was previously unheard of in the nuclear sector. For example, Westinghouse, a Pennsylvania-based nuclear power company, plans to build 10 new large reactors to help achieve the 2050 goal.

However, the road to renaissance is filled with familiar obstacles. Nuclear energy infrastructure is “too expensive to build, and it takes too long to build,” said Allison Macfarlane, a science and technology policy expert at the University of British Columbia who used to chair the NRC from 2012 to 2014.

And experts are divided on whether new nuclear technologies, such as small versions of reactors, are ready for primetime. The nuclear energy field is now “in a hype bubble that is driving unrealistic expectations,” said Edwin Lyman, the director of nuclear power safety at the Union of Concerned Scientists, a nonprofit science advocacy organization that has long acted as a nuclear safety watchdog.

Meanwhile, the Trump administration is trying to advance nuclear energy by weakening the NRC, Lyman said. “The message is that it’s regulation that has been the obstacle to deploying nuclear power, and if we just get rid of all this red tape, then the industry is going to thrive,” he added. “I think that’s really misplaced.”

Although streamlining the approval process might accelerate development, the true problem lies in the high costs of nuclear, which would need to be significantly cheaper to compete with other sources of energy such as natural gas, said Koroush Shirvan, a nuclear science researcher at the Massachusetts Institute of Technology. “Even the license-ready reactors are still not economical,” he said. If the newer reactor technologies do pan out, without government support and subsidies, Shirvan said, it is difficult to imagine them “coming online before 2035.”

It’s déjá vu all over again

Rumblings of a nuclear renaissance give experts a sense of déjà vu. The first resurgence in interest was around 2005, when many thought that nuclear energy could mitigate climate change and be an energy alternative to dwindling supply and rising prices of fossil fuels. But that enthusiasm slowed mainly after the Fukushima accident in 2011, in which a tsunami-triggered power outage—along with multiple safety failures—led to a nuclear meltdown at a facility in Japan. “So, the first nuclear renaissance fizzled out,” said Lyman.

Globally, the proportion of electricity provided by nuclear energy has been dwindling. Although there has been an increase in generation, nuclear energy has contributed less to the share of global electricity demand, dropping to 9 percent in 2024 from a peak of about 17 percent in 2001. In the US, 94 reactors generate about a fifth of the nation’s electricity, a proportion that has held steady since 1990s. But only two of those reactors have come online in the last nearly 30 years.

This renewed push is “a second bite at the apple, and we’ll have to see but it does seem to have a lot more of a headwind now,” said Lyman.

Much of that movement comes from the private sector, said Todd Allen, a nuclear engineer at the University of Michigan. In the last couple of decades, dozens of nuclear energy companies have emerged, including TerraPower, co-founded by Bill Gates. “It feels more like normal capitalism than we ever had in nuclear,” Allen said. Those companies are working on developing the large reactors that have been the backbone of nuclear energy for decades, as well as newer technologies that can bolster the field.

Proponents say small modular reactors, or SMRs, and microreactors, which generate less than 300 megawatts and 20 megawatts, respectively, could offer safer, cheaper, and more flexible energy compared to their more traditional counterparts. (Large reactors have, on average, 900 megawatts of capacity.) One 2022 study found that modularization can reduce construction time by up to 60 percent.

These designs have taken the spotlight: In 2024, a report estimated that the SMR market would reach $295 billion by 2043. In June, Energy Secretary Chris Wright told Congress that DOE will have at least three SMRs running by July of next year. And in July of this year, the Nuclear Energy Agency launched a dashboard to track SMR technologies around the world, which identified 74 SMR designs at different stages around the world. The first commercial SMR in North America is currently being constructed in Canada, with plans to be operational by 2030.

But whether SMRs and microreactors are actually safer and more cost-effective remains to be determined. A 2022 study found that SMRs would likely produce more leakage and nuclear waste than conventional reactors. Studying them, though, is difficult since so few are currently operational.

In part, that may be because of cost. Multiple analyses have concluded that, because of rising construction and operating costs, SMRs might not be financially viable enough to compete for the world’s energy markets, including in developing countries that lack affordable access to electricity.

And recent ventures have hit road bumps: For example, NuScale, the only SMR developer with a design approved by the NRC, had to shut down its operations in November 2023 due to increasingly high costs (though another uprated SMR design was approved earlier this year).

“Nothing is really commercialized yet,” said Macfarlane. Most of the tech companies haven’t figured out expenses, supply chains, the kind of waste they are going to produce or security at their reactors, she added.

Fuel supply is also a barrier since most plants use uranium enriched at low rates, but SMRs and microreactors use uranium enriched at higher levels, which is typically sourced from Russia and not commercially available in the US. So scientists at the Idaho National Laboratory are working to recover enriched uranium from existing reactors and developed new, more cost-effective fuels, said Jess Gehin, the associate laboratory director for the Nuclear Science & Technology Directorate at the INL. They are also using artificial intelligence and modeling simulation tools and capabilities to optimize nuclear energy systems, he added: “We got to reach 400 gigawatts, we need to accelerate all of this.”

Companies are determined to face and surpass these barriers. Some have begun pouring concrete, such as one nuclear company called Kairos Power that began building a demo of their SMR design in Tennessee; the plant is projected to be fully operational by 2027. “I would make the case that we’re moving faster than many in the field, if not the fastest,” Mike Laufer, the company’s CEO and co-founder, told Reuters last year.

Some experts think achieving nuclear expansion can be done—and revel in the progress so far: “I would have never thought we’d be in this position where we’re working so hard to expand nuclear, because for most of my career, it wasn’t that way,” said Gehin. “And I would say each month that goes by exceeds my expectations on the next bigger things that are coming.”

Doing more with less?

Although the Trump administration aims to accelerate nuclear energy through executive orders, in practice, it has not allocated new funding yet, said Matt Bowen, an expert on nuclear energy, waste, and nonproliferation at Columbia University’s Center on Global Energy Policy. In fact, the initial White House budget proposed cutting $4.7 billion from the Department of Energy, including $408 million from the Office of Nuclear Energy allocated for nuclear research in the 2026 fiscal year.

“The administration was proposing cuts to Office of Nuclear Energy and DOE more broadly, and DOGE is pushing staff out,” said Bowen. “How do you do more with less? Less staff, less money.”

The Trump administration places the blame for the nuclear sector’s stagnation on the NRC, which oversees licensing and recertification processes that cost the industry millions of dollars each year in compliance. In his executive orders, Trump called for a major reorganization of the NRC. Some of the proposed changes, like streamlining the approval process (which can take years for new plants), may be welcomed because “for a long time, they were very, very, very slow,” said Charles Forsberg, a nuclear chemical engineer at MIT. But there are worries that the executive orders could do more than cut red tape.

“Every word in those orders is of concern, because the thrust of those orders is to essentially strip the Nuclear Regulatory Commission of its independence from the executive branch, essentially nullifying the original purpose,” said Lyman.

Some experts fear that with these new constraints, NRC staff will have less time and fewer resources to do their jobs, which could impact power plant safety in the future. Bowen said: “This notion that the problem for nuclear energy is regulation, and so all we need to do is deregulate, is both wrong and also really problematic.”

The next few decades will tell whether nuclear, especially SMRs, can overcome economic and technical challenges to safely contribute to decarbonization efforts. Some, like Gehin, are optimistic. “I think we’re going to accelerate,” he said. “We certainly can achieve a dramatic deployment if we put our mindset to it.”

But making nuclear financially competitive will take serious commitment from the government and the dozens of companies, with many still skeptical, Shirvan said. “I am quite, I would say, on the pessimistic scale when it comes to the future of nuclear energy in the US.”

This article was originally published on Undark. Read the original article.

The US is trying to kick-start a “nuclear energy renaissance” Read More »

60-years-after-gemini,-newly-processed-images-reveal-incredible-details

60 years after Gemini, newly processed images reveal incredible details


“It’s that level of risk that they were taking. I think that’s what really hit home.”

Before / after showing the image transformation. Buzz Aldrin is revealed as he takes the first selfie in space on Gemini 12, November 12, 1966. Credit: NASA / ASU / Andy Saunders

Before / after showing the image transformation. Buzz Aldrin is revealed as he takes the first selfie in space on Gemini 12, November 12, 1966. Credit: NASA / ASU / Andy Saunders

Six decades have now passed since some of the most iconic Project Gemini spaceflights. The 60th anniversary of Gemini 4, when Ed White conducted the first US spacewalk, came in June. The next mission, Gemini 5, ended just two weeks ago, in 1965. These missions are now forgotten by most Americans, as most of the people alive during that time are now deceased.

However, during these early years of spaceflight, NASA engineers and astronauts cut their teeth on a variety of spaceflight firsts, flying a series of harrowing missions during which it seems a miracle that no one died.

Because the Gemini missions, as well as NASA’s first human spaceflight program Mercury, yielded such amazing stories, I was thrilled to realize that a new book has recently been published—Gemini & Mercury Remastered—that brings them back to life in vivid color.

The book is a collection of 300 photographs from NASA’s Mercury and Gemini programs during the 1960s, in which Andy Saunders has meticulously restored the images and then deeply researched their background to more fully tell the stories behind them. The end result is a beautiful and powerful reminder of just how brave America’s first pioneers in space were. What follows is a lightly edited conversation with Saunders about how he developed the book and some of his favorite stories from it.

Ars: Why put out a book on Mercury and Gemini now?

Andy Saunders: Well, it’s the 60th anniversaries of the Gemini missions, but the book is really the prequel to my first book, Apollo Remastered. This is about the missions that came before. So it takes us right back to the very dawn of human space exploration, back to the very beginning, and this was always a project I was going to work on next. Because, as well as being obviously very important in spaceflight history, they’re very important in terms of human history, the human evolution, even, you know, the first time we were able to escape Earth.

For tens of thousands of years, civilizations have looked up and dreamt of leaving Earth and voyaging to the stars. And this golden era in the early 1960s is when that ancient dream finally became a reality. Also, of course, the first opportunity to look back at Earth and give us that unique perspective. But I think it’s really the photographs specifically that will just forever symbolize and document at the beginning of our expansion out into the cosmos. You know, of course, we went to the Moon with Apollo. We’ll go back with Artemis. We spent long periods on the International Space Station. We’ll walk on Mars. We’ll eventually become a multi-planetary species. But this is where it all began and how it all began.

Ars: They used modified Hasselblad cameras during Apollo to capture these amazing images. What types of cameras were used during Mercury and Gemini?

Saunders: Mercury was more basic cameras. So on the very first missions, NASA didn’t want the astronaut to take a camera on board. The capsules were tiny. They were very busy. They’re very short missions, obviously very groundbreaking missions. So, the first couple of missions, there was a camera out of the porthole window, just taking photographs automatically. But it was John Glenn on his mission (Mercury-Atlas 6) who said, “No, I want to take a camera. People want to know what it’s going to be like to be an astronaut. They’re going to want to look at Earth through the window. I’m seeing things no humans ever seen before.” So he literally saw a $40 camera in a drugstore on his way after a haircut at Cocoa Beach. He thought, “That’s perfect.” And he bought it himself, and then NASA adapted it. They put a pistol grip on to help him to use it. And with it, he took the first still photographs of Earth from space.

So it was the early astronauts that kind of drove the desire to take cameras themselves, but they were quite basic. Wally Schirra (Mercury-Atlas 8) then took the first Hasselblad. He wanted medium format, better quality, but really, the photographs from Mercury aren’t as stunning as Gemini. It’s partly the windows and the way they took the photos, and they’d had little experience. Also, preservation clearly wasn’t high up on the agenda in Mercury, because the original film is evidently in a pretty bad state. The first American in space is an incredibly important moment in history. But every single frame of the original film of Alan Shepard’s flight was scribbled over with felt pen, it’s torn, and it’s fixed with like a piece of sticky tape. But it’s a reminder that these weren’t taken for their aesthetic quality. They weren’t taken for posterity. You know, they were technical information. The US was trying to catch up with the Soviets. Preservation wasn’t high up on the agenda.

This is not some distant planet seen in a sci-fi movie, it’s our Earth, in real life, as we explored space in the 1960s. The Sahara desert, photographed from Gemini 11, September 14, 1966. As we stand at the threshold of a new space age, heading back to the Moon, onward to Mars and beyond, the photographs taken during Mercury and Gemini will forever symbolize and document the beginning of humankind’s expansion out into the cosmos. NASA / ASU / Andy Saunders

Ars: I want to understand your process. How many photos did you consider for this book?

Saunders: With Apollo, they took about 35,000 photographs. With Mercury and Gemini, there were about 5,000. Which I was quite relieved about.  So yeah, I went through all 5,000 they took. I’m not sure how much 16 millimeter film in terms of time, because it was at various frame rates, but a lot of 16 millimeter film. So I went through every frame of film that was captured from launch to splashdown on every mission.

Ars: Out of that material, how much did you end up processing?

Saunders: What I would first do is have a quick look, particularly if there’s apparently nothing in them, because a lot of them are very underexposed. But with digital processing, like I did with the cover of the Apollo book, we can pull out stuff that you actually can’t see in the raw file. So it’s always worth taking a look. So do a very quick edit, and then if it’s not of interest, it’s discarded. Or it might be that clearly an important moment was happening, even if it’s not a particularly stunning photograph, I would save that one. So I was probably down from 5,000 to maybe 800, and then do a better edit on it.

And then the final 300 that are in the book are those that are either aesthetically stunning, or they’re a big transformation, or they show something important that happened on the mission, or a historically significant moment. But also, what I want to do with the book, as well as showing the photographs, is tell the stories, these incredible human stories that, because of the risks they were taking. So to do that, I effectively reconstructed every mission from launch to splashdown by using lots of different pieces of information in order to effectively map the photography onto a timeline so that it can then tell the story through the captions. So a photograph might be in there simply to help tell part of the story.

Ars: What was your favorite story to tell?

Saunders: Well, perhaps in terms of a chapter and a mission, I’d say Gemini 4 is kind of the heart of the book. You know, first US space walk, quite a lot of drama occurred when they couldn’t close the hatch. There’s some quite poignant shots, particularly of Ed White, of course, who later lost his life in the Apollo 1 fire. But in terms of the story, I mean, Gemini 9A was just, there needs to be a movie about just Gemini 9A. Right from the start, from losing the prime crew, and then just what happened out on Gene Cernan’s EVA, how he got back into the capsule alive is quite incredible, and all this detail I’ve tried to cover because he took his camera. So he called it the spacewalk from hell. Everything that could go wrong went wrong. He was incredibly exhausted, overheated. His visor steamed over. He went effectively blind, and he was at the back of the adapter section. This is at a point when NASA just hadn’t mastered EVA. So, simply how you maneuver in space, they just haven’t mastered, so he was exhausted. He was almost blind. Then he lost communication with Tom Stafford, his command pilot. He tore his suit, because, of course, back then, there were all kinds of jagged parts on the spacecraft.

And then when he’s finally back in the hatch, he was quite a big chap, and they couldn’t close the hatch, so he was bent double trying to close the hatch. He started to see stars. He said, Tom, if we don’t close this hatch now and re-pressurize, I am going to die. They got it closed, got his helmet off, and Tom Stafford said he just looked like someone that had spent far too long in a sauna. Stafford sprayed him with a water hose to kind of cool him down. So what happened on that mission is just quite incredible. But there was something on every mission, you know, from Gus Grissom sinking of the Liberty Bell and him almost drowning, the heat shield coming loose, or an indicator that suggested the heat shield was loose on Glenn’s mission. There’s an image of that in the book. Like I said, I mapped everything to the timeline, and worked out the frame rates, and we’ve got the clock we can see over his shoulder. So I could work out exactly when he was at the point of maximum heating through reentry, when part of the strapping that kept the retro pack on, to try and hold a heat shield on that hit the window, and he’s talking, but no one was listening, because it was during radio blackout.

After being informed his heat shield may have come loose, John Glenn is holding steadfast in the face of real uncertainty, as he observes the retro pack burn up outside his window, illuminating the cabin in an orange glow, during re-entry on February 20, 1962. “This is Friendship Seven. I think the pack just let go … A real fireball outside! … Great chunks of that retro pack breaking off all the way through!”

Credit: NASA / Andy Saunders

After being informed his heat shield may have come loose, John Glenn is holding steadfast in the face of real uncertainty, as he observes the retro pack burn up outside his window, illuminating the cabin in an orange glow, during re-entry on February 20, 1962. “This is Friendship Seven. I think the pack just let go … A real fireball outside! … Great chunks of that retro pack breaking off all the way through!” Credit: NASA / Andy Saunders

The process I used for this, on the low-quality 16 mm film, was to stack hundreds and hundreds of frames to bring out incredible detail. You can almost see the pores in his skin. To see this level of detail, to me, it’s just like a portrait of courage. There he is, holding steadfast, not knowing if he’s about to burn up in the atmosphere. So that was quite a haunting image, if you like, to be able to help you step on board, you know, these tiny Mercury spacecraft, to see them, to see what they saw, to look out the windows and see how they saw it.

Ars: What was new or surprising to you as you spent so much time with these photos and looking at the details?

Saunders: The human side to them. Now that we can see them this clearly, they seem to have an emotional depth to them. And it’s that level of risk that they were taking. I think that’s what really hit home. The Earth shots are stunning. You know, you can almost feel the scale, particularly with a super wide lens, and the altitudes they flew to. And you can just imagine what it must have been like out on an EVA, for example. I think Gene Cernan said it was like sitting on God’s front porch, the view he had on his EVA. So those Earth shots are stunning, but it’s really those the human side that really hits home for me. I read every word of every transcript of every mission. All the conversations were recorded on tape between the air and the ground, and between the astronauts when they were out of ground contact, and reading those it really hits home what they were doing. I found myself holding my breath, and, you know, my shoulders were stiff.

Ars: So what’s next? I mean, there’s only about 100 million photos from the Space Shuttle era.

Saunders: Thankfully, they weren’t all taken on film. So if I wanted to complete space on film, then what I haven’t yet done is Apollo-Soyuz, Skylab, and the first, whatever it is, 20 percent of the shuttle. So maybe that’s next. But I would just like a rest, because I’ve been doing this now since the middle of 2019, literally nonstop. It’s all I’ve done with Apollo and now Mercury and Gemini. The books make a really nice set in that they’re exactly the same size. So it covers the first view of the curvature of Earth and space right through to our last steps on the Moon.

Photo of Eric Berger

Eric Berger is the senior space editor at Ars Technica, covering everything from astronomy to private space to NASA policy, and author of two books: Liftoff, about the rise of SpaceX; and Reentry, on the development of the Falcon 9 rocket and Dragon. A certified meteorologist, Eric lives in Houston.

60 years after Gemini, newly processed images reveal incredible details Read More »

modder-injects-ai-dialogue-into-2002’s-animal-crossing-using-memory-hack

Modder injects AI dialogue into 2002’s Animal Crossing using memory hack

But discovering the addresses was only half the problem. When you talk to a villager in Animal Crossing, the game normally displays dialogue instantly. Calling an AI model over the Internet takes several seconds. Willison examined the code and found Fonseca’s solution: a watch_dialogue() function that polls memory 10 times per second. When it detects a conversation starting, it immediately writes placeholder text: three dots with hidden pause commands between them, followed by a “Press A to continue” prompt.

“So the user gets a ‘press A to continue’ button and hopefully the LLM has finished by the time they press that button,” Willison noted in a Hacker News comment. While players watch dots appear and reach for the A button, the mod races to get a response from the AI model and translate it into the game’s dialog format.

Learning the game’s secret language

Simply writing text to memory froze the game. Animal Crossing uses an encoded format with control codes that manage everything from text color to character emotions. A special prefix byte (0x7F) signals commands rather than characters. Without the proper end-of-conversation control code, the game waits forever.

“Think of it like HTML,” Fonseca explains. “Your browser doesn’t just display words; it interprets tags … to make text bold.” The decompilation community had documented these codes, allowing Fonseca to build encoder and decoder tools that translate between a human-readable format and the GameCube’s expected byte sequences.

A screenshot of LLM-powered dialog injected into Animal Crossing for the GameCube.

A screenshot of LLM-powered dialog injected into Animal Crossing for the GameCube. Credit: Joshua Fonseca

Initially, he tried using a single AI model to handle both creative writing and technical formatting. “The results were a mess,” he notes. “The AI was trying to be a creative writer and a technical programmer simultaneously and was bad at both.”

The solution: split the work between two models. A Writer AI creates dialogue using character sheets scraped from the Animal Crossing fan wiki. A Director AI then adds technical elements, including pauses, color changes, character expressions, and sound effects.

The code is available on GitHub, though Fonseca warns it contains known bugs and has only been tested on macOS. The mod requires Python 3.8+, API keys for either Google Gemini or OpenAI, and Dolphin emulator. Have fun sticking it to the man—or the raccoon, as the case may be.

Modder injects AI dialogue into 2002’s Animal Crossing using memory hack Read More »

feds-try-to-dodge-lawsuit-against-their-bogus-climate-report

Feds try to dodge lawsuit against their bogus climate report


Meanwhile, Congress is trying to keep serious scientists from weighing in.

While the Trump administration has continued to refer to efforts to avoid the worst impacts of climate change as a scam, it has done almost nothing to counter the copious scientific evidence that demonstrates that climate change is real and doing real damage to the citizens of the US. The lone exception has been a draft Department of Energy report prepared by a handful of carefully chosen fringe figures that questioned the mainstream understanding of climate change. The shoddy work and questionable conclusions of that report were so extensive that an analysis of it required over 450 pages to detail all of its shortcomings.

But its shortcomings may not have been limited to the science, as a lawsuit alleges that its preparation violated a law that regulates the activities of federal advisory panels. Now, in an attempt to avoid dealing with that lawsuit, the Department of Energy is claiming that it dissolved the committee that prepared the report, making the lawsuit moot.

Meanwhile, Congress is also attempting to muddy the waters. In response to the DOE report, the National Academies of Science announced that it would prepare a report describing the current state of climate science. Republicans on the House Committee on Oversight have responded by announcing an investigation of the National Academies “for undermining the EPA.”

The vanishing committee

As we noted in our original coverage, the members of the advisory group that prepared the DOE report were carefully chosen for having views that are well outside the mainstream of climate science. Based on their past public statements, they could be counted on to produce a report that would question the severity of climate change and raise doubts about whether we had any evidence it was happening. The report they produced went beyond that by suggesting that the net effect of our carbon emissions was likely to be a positive for humanity.

Not only was that shoddy science, but a lawsuit filed by the Environmental Defense Fund and the Union of Concerned Scientists suggested that it was likely illegal. Groups like the one that wrote the report, the suit alleges, fall under the Federal Advisory Committee Act, which (among other things) dictates that these groups must be “fairly balanced in terms of the points of view represented,” rather than be selected in order to reinforce a single point of view.

The “among other things” that the law dictates is that the advisory groups have public meetings that are announced in advance, be chartered with a well-defined mission, and all of their records be made available to the public. In contrast, nobody within the Department of Energy, including the contrarians who wrote the report, acknowledged the work they were doing publicly until the day the draft report was released.

The suit alleges that the work of this group fell under the Federal Advisory Committee Act, and the group violated the act in all of the above ways and more. The act asks the courts to force the DOE to disclose all the relevant records involved with the preparation of the report, and to cease relying on it for any regulatory actions. That’s significant because the Environmental Protection Agency cited it in its attempts to roll back its prior finding that greenhouse gases posed a danger to the US public.

This week, the DOE responded in court by claiming the panel that produced the report had been dissolved, making the suit moot. That does not address the fact that the EPA is continuing to rely on the report in its attempts to argue there’s no point in regulating greenhouse gases. It also leaves the report itself in a weird limbo. Its release marked the start of a period of public comment, and said comments were supposed to be considered during the revisions that would take place before the draft was finalized.

Failure to complete the revision process would leave the EPA vulnerable to claims that it’s relying on an incomplete draft report for its scientific justifications. So, while the DOE’s tactics may protect some of its internal documents, it may ultimately cause larger problems for the Trump administration’s agenda.

Attacking the academies

Earlier this year, we were critical of the US’s National Academies of Science for seemingly refusing to respond to the Trump administration’s attacks on science. That reticence appeared to end in August with the release of the DOE climate report and the announcement that the EPA was using that report as the latest word on climate science, which it argued had changed considerably since the initial EPA decisions on this issue in 2009.

In response, the National Academies announced that it would fast-track a new analysis of the risks posed by greenhouse gases, this one done by mainstream scientists instead of a handful of fringe figures. The goal was to get it done before the EPA closed its public comment period on its proposal to ignore greenhouse gases.

Obviously, this poses a threat to the EPA’s planned actions, which apparently prompted Republicans in Congress to step in. Earlier this month, the chair of the House Committee on Oversight and Government Reform, Rep. James Comer (R-Ky.), announced he was investigating the National Academies for preparing this report, calling it “a blatant partisan act to undermine the Trump Administration.”

Comer has also sent a letter to the National Academies, outlining his concerns and demanding a variety of documents. Some of these are pretty convoluted: “The study is led by a National Academies member who serves as an external advisor to the Science Philanthropy Alliance, which has ties to the left-wing group Arabella Advisors through the New Venture Fund, an organization that promotes a variety of progressive causes and funds major climate litigation,” Comer says, suggesting … it’s not entirely clear what. Another member of the study panel had the audacity to endorse former President Biden for his climate policies. Separately, Comer says he’s concerned about the source of the funds that will pay for this study.

Some of Comer’s demands are consistent with this, focusing on funding for this review. But he goes well beyond that, demanding a list of all the National Academies’ sources of funding, as well as any internal communications about this study. He’s also going on a bit of a witch hunt within the federal government, demanding any communications the NAS has had with government employees regarding the DOE’s report or the EPA’s greenhouse gas decisions.

It’s pretty clear that Comer recognizes that any unbiased presentation of climate science is going to undercut the EPA’s rationale for reversing course on greenhouse gas regulations. So, he’s preparing in advance to undercut that presentation by claiming it’s rife with conflicts of interest—and he’s willing to include “supporting politicians who want to act on climate change” as a conflict.

All of this maneuvering is taking place before the EPA has even finalized its planned U-turn on greenhouse gases, a step that will undoubtedly trigger additional investigations and lawsuits. In many ways, this is likely to reflect many of these parties laying the groundwork for the legal fight to come. And, while some of this is ostensibly about the state of the science that has supported the EPA’s past policy decisions, it’s clear that the administration and its supporters are doing their best to minimize science’s impact on their preferred course of action.

Photo of John Timmer

John is Ars Technica’s science editor. He has a Bachelor of Arts in Biochemistry from Columbia University, and a Ph.D. in Molecular and Cell Biology from the University of California, Berkeley. When physically separated from his keyboard, he tends to seek out a bicycle, or a scenic location for communing with his hiking boots.

Feds try to dodge lawsuit against their bogus climate report Read More »

nasa-found-intriguing-rocks-on-mars,-so-where-does-that-leave-mars-sample-return?

NASA found intriguing rocks on Mars, so where does that leave Mars Sample Return?

NASA’s interim administrator, Sean Duffy, was fired up on Wednesday when he joined a teleconference to talk about new scientific findings that concerned the potential for life to have once existed on Mars.

“This is exciting news,” said Duffy about an arrow-shaped rock on Mars found by NASA’s Perseverance rover. The rock contained chemical signatures and structures that could have been formed by ancient microbial life. The findings were intriguing, but not conclusive. Further study of the rocks in an advanced lab on Earth might prove more definitive.

Duffy was ready, he said, to discuss the scientific results along with NASA experts on the call with reporters. However, the very first question—and for any space reporter, the obvious one—concerned NASA’s on-again, off-again plan to return rocks from the surface of Mars for study on Earth. This mission, called Mars Sample Return, has been on hold for nearly two years after an independent analysis found that NASA’s bloated plan would cost at least $8 billion to $11 billion. President Trump has sought to cancel it outright.

Duffy faces the space press

“What’s the latest on NASA’s plans to retrieve the samples from Perseverance?” asked Marcia Dunn, a reporter with the Associated Press, about small vials of rocks collected by the NASA rover on Mars.

“So listen, we’re looking at how we get this sample back, or other samples back,” Duffy replied. “What we’re going to do is look at our budget, so we look at our timing, and you know, how do we spend money better? And you know, what technology do we have to get samples back more quickly? And so that’s a current analysis that’s happening right now.”

A couple of questions later, Ken Chang, a science reporter with The New York Times, asked Duffy why President Trump’s budget request called for the cancellation of Mars Sample Return and whether that was still the president’s intent.

“I want to be really clear,” Duffy replied. “This is a 30-year process that NASA has undertaken. President Trump didn’t say, ‘Hey, let’s forget about Mars.’ No, we’re continuing our exploration. And by the way, we’ve been very clear under this president that we don’t want to just bring samples back from Mars. We want to send our boots to the Moon and to Mars, and that is the work that we’re doing. Amit (Kshatriya, the new associate administrator of NASA) even said maybe we’ll send our equipment to test this sample to Mars itself. All options are on the table.”

NASA found intriguing rocks on Mars, so where does that leave Mars Sample Return? Read More »

small,-affordable,-efficient:-a-lot-to-like-about-the-2026-nissan-leaf

Small, affordable, efficient: A lot to like about the 2026 Nissan Leaf


Smaller on the outside, bigger on the inside, and it goes farther on a single charge.

A Nissan Leaf in San Diego's Gaslamp District.

The color is called Seabreeze Blue Pearl, and isn’t it great it’s not silver or grey? Credit: Nissan

The color is called Seabreeze Blue Pearl, and isn’t it great it’s not silver or grey? Credit: Nissan

SAN DIEGO—The original Nissan Leaf was a car with a mission. Long before Elon Musk set his sights on Tesla selling vast numbers of electric vehicles to the masses, then-Nissan CEO Carlos Ghosn wanted Nissan to shift half a million Leafs a year in the early 2010s. That didn’t quite come to pass, but by 2020, it had sold its 500,000th EV, which went from its factory in Sunderland, England, to a customer in Norway.

Pioneering though they were, both first- and second-generation Leafs were compromised. They were adapted from existing internal combustion engine platforms, with the electric powertrains shoehorned inside. The cars’ real handicaps were a lack of liquid cooling for the battery packs. Like an older Porsche 911, the Leaf was air-cooled, albeit with none of the collector value. That’s all changed for generation three.

The new Leaf is built on a dedicated EV platform shared with Nissan’s alliance partners Renault and Mitsubishi, and which we have previously seen used to good effect in the Nissan Ariya. The benefits of using a platform purpose-designed for electric propulsion are obvious from the space efficiency. The new car is 3 inches (75 mm) shorter from the outside, but offers nearly 9 inches (221 mm) more rear leg room (yes, really), making it a much more suitable place to put adults.

Is it a sedan? Is it a crossover? Nissan

Although the new Leaf is 0.8 inches (20 mm) wider, it’s a few mm shorter and has a lower drag coefficient (Cd 0.26), so the overall effect is a more efficient shape. The nose bears a family resemblance to the Ariya, and the body style is sort of a crossover, sort of a fastback sedan, depending on your frame of reference.

Here and there, you’ll notice iconography that calls out the automaker’s name: two vertical stripes (ni in Japanese), then three horizontal ones (san in Japanese). I’m told that if you look, there are some ginkgo leaves as Easter eggs hidden in the design, but I did not find them during our hours with the car.

For now, there’s one powertrain option: a 214 hp (160 kW), 262 lb-ft (355 Nm) motor (packaged together with its inventor and reducer), powered by a 75 kWh (net) lithium-ion battery pack. The battery pack is integrated into the car’s thermal management system, which also loops in the chiller, the motor, and the HVAC system. It can fast-charge at up to 150 kW via the NACS port built into its left side (or using a CCS1 adapter here) and should charge from 10–80 percent in 35 minutes. On the driver’s side is a J1772 port for AC charging that can also work bidirectionally to send up to 1.5 kW of AC power to an external device via an adapter.

Nissan said it kept the J1772 port because it expects to sell the new Leaf to a lot of legacy customers who already have their own home charger, and it wanted to minimize the number of adapters necessary.

Let’s talk trim levels

How far it goes on a single charge depends on which trim level you’re in. Nissan brought some preproduction Leaf Platinum+ models to the first drive. These are very highly equipped, with an electrochromic dimming roof, the LED head- and taillights you see in the images, a couple of AC outlets inside the car (with the ability to power up to 3.4 kW across two outlets), and a better sound system. But it also comes on 19-inch alloy wheels, and as we all know, bigger wheels mean smaller range. Indeed, the Leaf Platinum+ has a range of 259 miles (417 km) on a single charge.

The $34,230 SV+ loses the panoramic roof and the interior V2L outlets, and you’ll have to manually open and close the tailgate at the back. And the alloy wheels are an inch smaller, which increases the range to 288 miles (464 km).

But it keeps the heated front seats and the twin 14.3-inch displays (one for your instruments, one for infotainment) with Google built in. For the Platinum+ and SV+, that means onboard Google Maps with a route planner that will take into account your state of charge and which can precondition the battery if it knows your destination is a fast charger.

19-inch Nissan Leaf wheel

Big wheels have their drawbacks. Credit: Nissan

Nissan is only including the Google connected services for the first year, though—after that, owners will have to pay a monthly fee, although Nissan wasn’t able to tell us how much that is. Conveniently, both wireless Android Auto and Apple CarPlay are included and will continue to work after the year’s trial. And you can manually precondition the battery for charging, but automatic preconditioning via the infotainment system will not work without an active subscription.

The SV+ and Platinum can also be optioned with a heat pump ($300).

But the $29,990 S+ cannot. And it lacks the twin displays of the car you see in the images, which means no automatic battery preconditioning, although like the more expensive trims it does still have wireless Apple CarPlay and Android Auto. You also get 18-inch steel wheels with aero hubcaps, and a range of 303 miles (487 km) on a single charge. See what I mean about wheel size and range?

How does it drive?

A Nissan Leaf

Turning over a new leaf. Credit: Nissan

I’d very much like to spend some time in an S+ and an SV+, if only to see what difference a larger tire sidewall makes to the ride comfort. On 19-inch wheels, the ride was firm and translated bumps and divots through the suspension and into the cabin. There wasn’t much body roll, but your progress will be limited by the grip available to the low rolling-resistance tires—push too hard and the result is plenty of understeer.

But this is not a “push too hard” kind of EV. With just 214 hp, it accelerates quickly enough to get out of its own way, but it’s telling that Nissan did not share a 0–60 mph time during the briefing. (If I had to guess, I’d say between 5–6 seconds, which used to be considered very rapid.)

It has four drive modes—Eco, Normal, Sport, and Personal—with three different throttle maps and two steering weights to choose from. And there are now four levels of lift-off regenerative braking, which you toggle on with the left steering wheel paddle and off with the right paddle. You can’t turn regen completely off, so like General Motors’ family of EVs, the Leaf will not really coast and loses a few mph even on downhill stretches, as it converts some kinetic energy to electrical energy.

There’s also an e-Step button on the dash, which turns on maximum regen braking and may add some friction braking to the mix. Unlike using the paddles, this setting should remain on the next time you start the car. But neither of the full regen settings is able to bring the car to a complete stop—we were told that the feature is viewed with suspicion in some markets, including Japan, and like pop-out door handles, it appears that China is in the process of banning one-pedal driving entirely.

There are plenty of real buttons and switches in here. Nissan

Both e-Step and max-regen work very well in traffic or on a twisty road, where they simulate engine braking. But given the choice, I would use the paddles to control regen braking. That’s because, like the Mercedes EQ family of EVs, in this mode the brake pedal moves toward the firewall as the car slows. The engineer’s excuse for this is that the pedal moves by the same distance it would have moved had the driver used it to slow the car by the amount it has just slowed. But my rebuttal is that the brake pedal should always be where I expect to find it in an emergency, and if that’s an inch farther away, that’s not cool.

That’s really a minor gripe, though; no one says you have to push the e-Step switch on the dash. Slightly more annoying—but only slightly—is the wind noise from the sideview mirrors, which is noticeable even at 45 mph (72 km/h), although easily drowned out if you’re listening to something on the audio system.

For a daily driver, the third-generation Leaf is rather compelling, especially the S+, although the lack of heated front seats in that model might be too much of a deal-breaker, considering how important seat heaters are to EV efficiency in winter. (Because it’s more efficient to heat the driver than warm all the air in the car.)

The SV+ is more likely to be the sweet spot—this trim level can have the Seabreeze paint you see here or a white pearl, which are alternatives to the four shades available to the S+. The Hyundai Kona EV and Kia Niro EV are probably the Leaf’s two closest rivals, both of which are compelling cars. And the forthcoming Kia EV3 will probably also be cross-shopped. All of which is good news if you’re looking for a smaller, affordable electric car.

Photo of Jonathan M. Gitlin

Jonathan is the Automotive Editor at Ars Technica. He has a BSc and PhD in Pharmacology. In 2014 he decided to indulge his lifelong passion for the car by leaving the National Human Genome Research Institute and launching Ars Technica’s automotive coverage. He lives in Washington, DC.

Small, affordable, efficient: A lot to like about the 2026 Nissan Leaf Read More »

pentagon-begins-deploying-new-satellite-network-to-link-sensors-with-shooters

Pentagon begins deploying new satellite network to link sensors with shooters


“This is the first time we’ll have a space layer fully integrated into our warfighting operations.”

A SpaceX Falcon 9 rocket lifts off from Vandenberg Space Force Base, California, with a payload of 21 data-relay satellites for the US military’s Space Development Agency. Credit: SpaceX

The first 21 satellites in a constellation that could become a cornerstone for the Pentagon’s Golden Dome missile-defense shield successfully launched from California Wednesday aboard a SpaceX Falcon 9 rocket.

The Falcon 9 took off from Vandenberg Space Force Base, California, at 7: 12 am PDT (10: 12 am EDT; 14: 12 UTC) and headed south over the Pacific Ocean, heading for an orbit over the poles before releasing the 21 military-owned satellites to begin several weeks of activations and checkouts.

These 21 satellites will boost themselves to a final orbit at an altitude of roughly 600 miles (1,000 kilometers). The Pentagon plans to launch 133 more satellites over the next nine months to complete the build-out of the Space Development Agency’s first-generation, or Tranche 1, constellation of missile-tracking and data-relay satellites.

“We had a great launch today for the Space Development Agency, putting this array of space vehicles into orbit in support of their revolutionary new architecture,” said Col. Ryan Hiserote, system program director for the Space Force’s assured access to space launch execution division.

Over the horizon

Military officials have worked for six years to reach this moment. The Space Development Agency (SDA) was established during the first Trump administration, which made plans for an initial set of demonstration satellites that launched a couple of years ago. In 2022, the Pentagon awarded contracts for the first 154 operational spacecraft. The first batch of 21 data-relay satellites built by Colorado-based York Space Systems is what went up Wednesday.

“Back in 2019, when the SDA was stood up, it was to do two things. One was to make sure that we can do beyond line of sight targeting, and the other was to pace the threat, the emerging threat, in the missile-warning and missile-tracking domain. That’s what the focus has been,” said Gurpartap “GP” Sandhoo, the SDA’s acting director.

Secretary of the Air Force Troy Meink and Sen. Kevin Cramer (R-N.D.) pose with industry and government teams in front of the Space Development’s first 21 operational satellites at Vandenberg Space Force Base, California. Cramer is one the most prominent backers of the Golden Dome program in the US Senate. Credit: US Air Force/Staff Sgt. Daekwon Stith

Historically, the military communications and missile-warning networks have used a handful of large, expensive satellites in geosynchronous orbit some 22,000 miles (36,000 kilometers) above the Earth. This architecture was devised during the Cold War and is optimized for nuclear conflict and intercontinental ballistic missiles.

For example, the military’s ultra-hardened Advanced Extremely High Frequency satellites in geosynchronous orbit are designed to operate through an electromagnetic pulse and nuclear scintillation. The Space Force’s missile-warning satellites are also in geosynchronous orbit, with infrared sensors tuned to detect the heat plume of a missile launch.

The problem? Those satellites cost more than $1 billion a pop. They’re also vulnerable to attack from a foreign adversary. Pentagon officials say the SDA’s satellite constellation, officially called the Proliferated Warfighter Space Architecture, is tailored to detect and track more modern threats, such as smaller missiles and hypersonic weapons carrying conventional warheads. It’s easier for these missiles to evade the eyes of older early warning satellites.

What’s more, the SDA’s fleet in low-Earth orbit will have numerous satellites. Losing one or several satellites to an attack would not degrade the constellation’s overall capability. The SDA’s new relay satellites cost between $14 and $15 million each, according to Sandhoo. The total cost of the first tranche of 154 operational satellites totals approximately $3.1 billion.

Multi-mission satellites

These satellites will not only detect and track ballistic and hypersonic missile launches; they will also transmit signals between US forces using an existing encrypted tactical data link network known as Link 16. This UHF system is used by NATO and other US allies to allow military aircraft, ships, and land forces to share tactical information through text messages, pictures, data, and voice communication in near real time, according to the SDA’s website.

Up to now, Link 16 radios were ubiquitous on fighter jets, helicopters, naval vessels, and missile batteries. But they had a severe limitation. Link 16 was only able to close a radio link with a clear line of sight. The Space Development Agency’s satellites will change that, providing direct-to-weapon connectivity from sensors to shooters on Earth’s surface, in the air, and in space.

The relay satellites, which the SDA calls the transport layer, are also equipped with Ka-band and laser communication terminals for higher-bandwidth connectivity.

“What the transport layer does is it extends beyond the line of sight,” Sandhoo said. “Now, you’re able to talk not only to within a couple of miles with your Link 16 radios, (but) we can use space to, let’s say, go from Hawaii out to Guam using those tactical radios, using a space layer.”

The Space Development Agency’s “Tranche 1” architecture includes 154 operational satellites, 126 for data relay and 28 for missile tracking. With this illustration, the SDA does its best to show how the complex architecture is supposed to work. Credit: Space Development Agency

Another batch of SDA relay satellites will launch next month, and more will head to space in November. In all, it will take 10 launches to fully deploy the SDA’s Tranche 1 constellation. Six of those missions will carry data-relay satellites, and four will carry satellites with sensors to detect and track missile launches. The Pentagon selected several contractors to build the satellites, so the military is not reliant on a single company. The builders of the SDA’s operational satellites include York, Lockheed Martin, Northrop Grumman, and L3Harris.

“We will increase coverage as we get the rest of those launches on orbit,” said Michael Eppolito, the SDA’s acting deputy director.

The satellites will connect with one another using inter-satellite laser links, creating a mesh network with sufficient range to provide regional communications, missile warning, and targeting coverage over the Western Pacific beginning in 2027. US Indo-Pacific Command, which oversees military operations in this region, is slated to become the first combatant command to take up use of the SDA’s satellite constellation.

This is not incidental. US officials see China as the nation’s primary strategic threat, and Indo-Pacific Command would be on the front lines of any future conflict between Chinese and US forces. The SDA has contracts in place for more than 270 second-generation, or Tranche 2, satellites, to further expand the network’s reach. There’s also a third generation in the works, but the Pentagon has paused part of the SDA’s Tranche 3 program to evaluate other architectures, including one offered by SpaceX.

Teaching tactical operators to use the new capabilities offered by the SDA’s satellite fleet could be just as challenging as building the network itself. To do this, the Pentagon plans to put soldiers, sailors, airmen, and marines through “warfighter immersion” training beginning next year. This training will allow US forces to “get used to using space from this construct,” Sandhoo said.

“This is different than how it has been done in the past,” Sandhoo said. “This is the first time we’ll have a space layer actually fully integrated into our warfighting operations.”

The SDA’s satellite architecture is a harbinger for what’s to come with the Pentagon’s Golden Dome system, a missile-defense shield for the US homeland proposed by President Donald Trump in an executive order in January. Congress authorized a down payment on Golden Dome in July, the first piece of funding for what the White House says will cost $175 billion over the next three years.

Golden Dome, as currently envisioned, will require thousands of satellites in low-Earth orbit to track missile launches and space-based interceptors to attempt to shoot them down. The Trump administration hasn’t said how much of the shield might be deployed by the end of 2028, or what the entire system might eventually cost.

But the capabilities of the SDA’s satellites will lay the foundation for any regional or national missile-defense shield. Therefore, it seems likely that the military will incorporate the SDA network into Golden Dome, which, at least at first, is likely to consist of technologies already in space or nearing launch. Apart from the Space Development Agency’s architecture in low-Earth orbit (LEO), the Space Force was already developing a new generation of missile-warning satellites to replace aging platforms in geosynchronous orbit (GEO), plus a fleet of missile-warning satellites to fly at a midrange altitude between LEO and GEO.

Air Force Gen. Gregory Guillot, commander of US Northern Command, said in April that Golden Dome “for the first time integrates multiple layers into one system that allows us to detect, track, and defeat multiple types of threats that affect us in different domains.

“So, while a lot of the components and the requirements were there in the past, this is the first time that it’s all tied together in one system,” he said.

Photo of Stephen Clark

Stephen Clark is a space reporter at Ars Technica, covering private space companies and the world’s space agencies. Stephen writes about the nexus of technology, science, policy, and business on and off the planet.

Pentagon begins deploying new satellite network to link sensors with shooters Read More »