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google’s-“ai-overview”-can-give-false,-misleading,-and-dangerous-answers

Google’s “AI Overview” can give false, misleading, and dangerous answers

This is fine.

Enlarge / This is fine.

Getty Images

If you use Google regularly, you may have noticed the company’s new AI Overviews providing summarized answers to some of your questions in recent days. If you use social media regularly, you may have come across many examples of those AI Overviews being hilariously or even dangerously wrong.

Factual errors can pop up in existing LLM chatbots as well, of course. But the potential damage that can be caused by AI inaccuracy gets multiplied when those errors appear atop the ultra-valuable web real estate of the Google search results page.

“The examples we’ve seen are generally very uncommon queries and aren’t representative of most people’s experiences,” a Google spokesperson told Ars. “The vast majority of AI Overviews provide high quality information, with links to dig deeper on the web.”

After looking through dozens of examples of Google AI Overview mistakes (and replicating many ourselves for the galleries below), we’ve noticed a few broad categories of errors that seemed to show up again and again. Consider this a crash course in some of the current weak points of Google’s AI Overviews and a look at areas of concern for the company to improve as the system continues to roll out.

Treating jokes as facts

  • The bit about using glue on pizza can be traced back to an 11-year-old troll post on Reddit. (via)

    Kyle Orland / Google

  • This wasn’t funny when the guys at Pep Boys said it, either. (via)

    Kyle Orland / Google

  • Weird Al recommends “running with scissors” as well! (via)

    Kyle Orland / Google

Some of the funniest example of Google’s AI Overview failing come, ironically enough, when the system doesn’t realize a source online was trying to be funny. An AI answer that suggested using “1/8 cup of non-toxic glue” to stop cheese from sliding off pizza can be traced back to someone who was obviously trying to troll an ongoing thread. A response recommending “blinker fluid” for a turn signal that doesn’t make noise can similarly be traced back to a troll on the Good Sam advice forums, which Google’s AI Overview apparently trusts as a reliable source.

In regular Google searches, these jokey posts from random Internet users probably wouldn’t be among the first answers someone saw when clicking through a list of web links. But with AI Overviews, those trolls were integrated into the authoritative-sounding data summary presented right at the top of the results page.

What’s more, there’s nothing in the tiny “source link” boxes below Google’s AI summary to suggest either of these forum trolls are anything other than good sources of information. Sometimes, though, glancing at the source can save you some grief, such as when you see a response calling running with scissors “cardio exercise that some say is effective” (that came from a 2022 post from Little Old Lady Comedy).

Bad sourcing

  • Washington University in St. Louis says this ratio is accurate, but others disagree. (via)

    Kyle Orland / Google

  • Man, we wish this fantasy remake was real. (via)

    Kyle Orland / Google

Sometimes Google’s AI Overview offers an accurate summary of a non-joke source that happens to be wrong. When asking about how many Declaration of Independence signers owned slaves, for instance, Google’s AI Overview accurately summarizes a Washington University of St. Louis library page saying that one-third “were personally enslavers.” But the response ignores contradictory sources like a Chicago Sun-Times article saying the real answer is closer to three-quarters. I’m not enough of a history expert to judge which authoritative-seeming source is right, but at least one historian online took issue with the Google AI’s answer sourcing.

Other times, a source that Google trusts as authoritative is really just fan fiction. That’s the case for a response that imagined a 2022 remake of 2001: A Space Odyssey, directed by Steven Spielberg and produced by George Lucas. A savvy web user would probably do a double-take before citing citing Fandom’s “Idea Wiki” as a reliable source, but a careless AI Overview user might not notice where the AI got its information.

Google’s “AI Overview” can give false, misleading, and dangerous answers Read More »

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On self-driving, Waymo is playing chess while Tesla plays checkers

A Waymo autonomous taxi in San Francisco.

Enlarge / A Waymo autonomous taxi in San Francisco.

David Paul Morris/Bloomberg via Getty Images

Tesla fans—and CEO Elon Musk himself—are excited about the prospects for Tesla’s Full Self Driving (FSD) software. Tesla released a major upgrade—version 12.3—of the software in March. Then, last month, Musk announced that Tesla would unveil a purpose-built robotaxi on August 8. Last week, Musk announced that a new version of FSD—12.4—will come out in the coming days and will have a “5X to 10X improvement in miles per intervention.”

But I think fans expecting Tesla to launch a driverless taxi service in the near future will be disappointed.

During a late March trip to San Francisco, I had a chance to try the latest self-driving technology from both Tesla and Google’s Waymo.

During a 45-minute test drive in a Tesla Model X, I had to intervene twice to correct mistakes by the FSD software. In contrast, I rode in driverless Waymo vehicles for more than two hours and didn’t notice a single mistake.

So while Tesla’s FSD version 12.3 seems like a significant improvement over previous versions of FSD, it still lags behind Waymo’s technology.

However, Waymo’s impressive performance comes with an asterisk. While no one was behind the wheel during my rides, Waymo has remote operators that sometimes provide guidance to its vehicles (Waymo declined to tell me whether—or how often—remote operators intervened during my rides). And while Tesla’s FSD works on all road types, Waymo’s taxis avoid freeways.

Many Tesla fans see these limitations as signs that Waymo is headed for a technological dead end. They see Tesla’s FSD, with its capacity to operate in all cities and on all road types, as a more general technology that will soon surpass Waymo.

But this fundamentally misunderstands the situation.

Safely operating driverless vehicles on public roads is hard. With no one in the driver’s seat, a single mistake can be deadly—especially at freeway speeds. So Waymo launched its driverless service in 2020 in the easiest environment it could find—residential streets in the Phoenix suburbs—and has been gradually ratcheting up the difficulty level as it gains confidence in its technology.

In contrast, Tesla hasn’t started driverless testing because its software isn’t ready. For now, geographic restrictions and remote assistance aren’t needed because there’s always a human being behind the wheel. But I predict that when Tesla begins its driverless transition, it will realize that safety requires a Waymo-style incremental rollout.

So Tesla hasn’t found a different, better way to bring driverless technology to market. Waymo is just so far ahead that it’s dealing with challenges Tesla hasn’t even started thinking about. Waymo is playing chess while Tesla is still playing checkers.

The current excitement around Tesla’s FSD reminds me of the hype that surrounded Waymo in 2018. Early that year, Waymo announced deals to purchase 20,000 I-Pace sedans from Jaguar and 62,000 Pacifica minivans from Fiat Chrysler.

But the service Waymo launched in December 2018 was a disappointment. There were still safety drivers behind the wheel on most rides, and access was limited to a handpicked group of passengers.

It wasn’t until October 2020 that Waymo finally launched a fully driverless taxi service in the Phoenix area that was open to the general public. And even after that, Waymo expanded slowly.

Waymo began offering commercial service in San Francisco in 2023 and is now expanding to Los Angeles and Austin. Today, the company has only a few hundred vehicles in its commercial fleet—far fewer than the 82,000 vehicles it was planning to purchase six years ago.

What went wrong? In an August 2018 article, journalist Amir Efrati reported on the limitations of Waymo’s technology. Efrati wrote that “Waymo vans have trouble with many unprotected left turns and with merging into heavy traffic in the Phoenix area.” In addition, “the cars have trouble separating people, or cyclists, who are in groups, especially people near shopping centers or in parking lots.”

On self-driving, Waymo is playing chess while Tesla plays checkers Read More »

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We take a stab at decoding SpaceX’s ever-changing plans for Starship in Florida

SpaceX's Starship tower (left) at Launch Complex 39A dwarfs the launch pad for the Falcon 9 rocket (right).

Enlarge / SpaceX’s Starship tower (left) at Launch Complex 39A dwarfs the launch pad for the Falcon 9 rocket (right).

There are a couple of ways to read the announcement from the Federal Aviation Administration that it’s kicking off a new environmental review of SpaceX’s plan to launch the most powerful rocket in the world from Florida.

The FAA said on May 10 that it plans to develop an Environmental Impact Statement (EIS) for SpaceX’s proposal to launch Starships from NASA’s Kennedy Space Center in Florida. The FAA ordered this review after SpaceX updated the regulatory agency on the projected Starship launch rate and the design of the ground infrastructure needed at Launch Complex 39A (LC-39A), the historic launch pad once used for Apollo and Space Shuttle missions.

Dual environmental reviews

At the same time, the US Space Force is overseeing a similar EIS for SpaceX’s proposal to take over a launch pad at Cape Canaveral Space Force Station, a few miles south of LC-39A. This launch pad, designated Space Launch Complex 37 (SLC-37), is available for use after United Launch Alliance’s last Delta rocket lifted off there in April.

On the one hand, these environmental reviews often take a while and could cloud Elon Musk’s goal of having Starship launch sites in Florida ready for service by the end of 2025. “A couple of years would not be a surprise,” said George Nield, an aerospace industry consultant and former head of the FAA’s Office of Commercial Space Transportation.

Another way to look at the recent FAA and Space Force announcements of pending environmental reviews is that SpaceX finally appears to be cementing its plans to launch Starship from Florida. These plans have changed quite a bit in the last five years.

The environmental reviews will culminate in a decision on whether to approve SpaceX’s proposals for Starship launches at LC-39A and SLC-37. The FAA will then go through a separate licensing process, similar to the framework used to license the first three Starship test launches from South Texas.

NASA has contracts with SpaceX worth more than $4 billion to develop a human-rated version of Starship to land astronauts on the Moon on the first two Artemis lunar landing flights later this decade. To do that, SpaceX must stage a fuel depot in low-Earth orbit to refuel the Starship lunar lander before it heads for the Moon. It will take a series of Starship tanker flights—perhaps 10 to 15—to fill the depot with cryogenic propellants.

Launching that many Starships over the course of a month or two will require SpaceX to alternate between at least two launch pads. NASA and SpaceX officials say the best way to do this is by launching Starships from one pad in Texas and another in Florida.

Earlier this week, Ars spoke with Lisa Watson-Morgan, who manages NASA’s human-rated lunar lander program. She was at Kennedy Space Center this week for briefings on the Starship lander and a competing lander from Blue Origin. One of the topics, she said, was the FAA’s new environmental review before Starship can launch from LC-39A.

“I would say we’re doing all we can to pull the schedule to where it needs to be, and we are working with SpaceX to make sure that their timeline, the EIS timeline, and NASA’s all work in parallel as much as we can to achieve our objectives,” she said. “When you’re writing it down on paper just as it is, it looks like there could be some tight areas, but I would say we’re collectively working through it.”

Officially, SpaceX plans to perform a dress rehearsal for the Starship lunar landing in late 2025. This will be a full demonstration, with refueling missions, an uncrewed landing of Starship on the lunar surface, then a takeoff from the Moon, before NASA commits to putting people on Starship on the Artemis III mission, currently slated for September 2026.

So you can see that schedules are already tight for the Starship lunar landing demonstration if SpaceX activates launch pads in Florida late next year.

We take a stab at decoding SpaceX’s ever-changing plans for Starship in Florida Read More »

how-i-upgraded-my-water-heater-and-discovered-how-bad-smart-home-security-can-be

How I upgraded my water heater and discovered how bad smart home security can be

The bottom half of a tankless water heater, with lots of pipes connected, in a tight space

Enlarge / This is essentially the kind of water heater the author has hooked up, minus the Wi-Fi module that led him down a rabbit hole. Also, not 140-degrees F—yikes.

Getty Images

The hot water took too long to come out of the tap. That is what I was trying to solve. I did not intend to discover that, for a while there, water heaters like mine may have been open to anybody. That, with some API tinkering and an email address, a bad actor could possibly set its temperature or make it run constantly. That’s just how it happened.

Let’s take a step back. My wife and I moved into a new home last year. It had a Rinnai tankless water heater tucked into a utility closet in the garage. The builder and home inspector didn’t say much about it, just to run a yearly cleaning cycle on it.

Because it doesn’t keep a big tank of water heated and ready to be delivered to any house tap, tankless water heaters save energy—up to 34 percent, according to the Department of Energy. But they’re also, by default, slower. Opening a tap triggers the exchanger, heats up the water (with natural gas, in my case), and the device has to push it through the line to where it’s needed.

That led to me routinely holding my hand under cold water in the sink or shower, waiting longer than felt right for reasonably warm water to appear. I understood the water-for-energy trade-off I was making. But the setup wasted time, in addition to potable water, however plentiful and relatively cheap it was. It just irked me.

Little did I know the solution was just around the corner.

Hot water hotspot

  • Attention!

    Kevin Purdy

  • Nothing’ll happen. Just touch it. It’s what you wanna do. It’s there for you to touch.

    Kevin Purdy

  • The Rinnai Central app. It does this “Control failed” bit quite often.

    Rinnai

I mean that literally. When I went into the utility closet to shut off the hose bibbs for winter, I noticed a plastic bag magnetically stuck to the back side of the water heater. “Attention! The Control-R Wi-Fi Module must be installed for recirculation to operate,” read the intense yellow warning label. The water heater would not “recirculate” without it, it noted.

The Rinnai Control-R module, out of bag.

Enlarge / The Rinnai Control-R module, out of bag.

Rinnai

Recirculation means that the heater would start pulling water and heating it on demand, rather than waiting for enough negative pressure from the pipes. To trigger this, Rinnai offered smartphone apps that could connect through its servers to the module.

I found the manual, unplugged the water heater, and opened it up. The tone of the language inside (“DO NOT TOUCH,” unless you are “a properly trained technician”) did not match that of the can-do manual (“get the most from your new module”). But, having read the manual and slotted little beige nubs before, I felt trained and technical. I installed the device, went through the typical “Connect your phone to this weirdly named hotspot” process, and—it worked.

I now had an app that could start recirculation. I could get my shower hot while still in bed, or get started on the dinner dishes from the couch. And yet pulling out my phone whenever I wanted hot water felt like trading one inconvenience for another.

How I upgraded my water heater and discovered how bad smart home security can be Read More »

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M4 iPad Pro review: Well, now you’re just showing off

The back of an iPad with its Apple logo centered

Enlarge / The 2024, M4-equipped 13-inch iPad Pro.

Samuel Axon

The new iPad Pro is a technical marvel, with one of the best screens I’ve ever seen, performance that few other machines can touch, and a new, thinner design that no one expected.

It’s a prime example of Apple flexing its engineering and design muscles for all to see. Since it marks the company’s first foray into OLED beyond the iPhone or Watch, and the first time a new M-series chip has debuted on something other than a Mac, it comes across as a tech demo for where the company is headed beyond just tablets.

Still, it remains unclear why most people would spend one, two, or even three thousand dollars on a tablet that, despite its amazing hardware, does less than a comparably priced laptop—or at least does it a little more awkwardly, even if it’s impressively quick and has a gorgeous screen.

Specifications

There are some notable design changes in the 2024 iPad Pro, but really, it’s all about the specs—and it’s a more notable specs jump than usual in a couple of areas.

M4

First up, there’s the M4 chip. The previous iPad Pro had an M2 chip, and the latest Mac chip is the M3, so not only did the iPad Pro jump two whole generations, but this is the first time it has debuted the newest iteration of Apple Silicon. (Previously, new M-series chips launched on the Mac first and came to the iPad Pro a few months later.)

Using second-generation 3 nm tech, the M4’s top configuration has a 10-core CPU, a 10-core GPU, and a 16-core NPU. In that configuration, the 10-core CPU has four performance cores and six efficiency cores.

A lower configuration of the M4 has just nine CPU cores—three performance and six efficiency. Which one you get is tied to how much storage you buy. 256GB and 512GB models get nine CPU cores, while 1TB and 2TB get 10. Additionally, the two smaller storage sizes have 8GB of RAM to the larger ones’ 16GB.

This isn’t the first time Apple has tied RAM to storage configurations, but doing that with CPU cores is new for the iPad. Fortunately, the company is upfront about all this in its specs sheet, whereas the RAM differentiation wasn’t always clear to buyers in the past. (Both configurations claim 120GB/s memory bandwidth, though.)

Can the M4 help the iPad Pro bridge the gap between laptop and tablet? Mostly, it made me excited to see the M4 in a laptop.

Enlarge / Can the M4 help the iPad Pro bridge the gap between laptop and tablet? Mostly, it made me excited to see the M4 in a laptop.

Samuel Axon

Regardless of the specific configuration, the M4 promises substantially better CPU and GPU performance than the M2, and it supports hardware-accelerated ray-tracing via Metal, which some games and applications can take advantage of if developers put in the work to make it happen. (It looked great in a demo of Diablo Immortal I saw, but it’s unclear how often we’ll actually see it in the wild.)

Apple claims 1.5x faster CPU performance than the M2 and up to 4x faster graphics performance specifically on applications that involve new features like ray-tracing or hardware-accelerated mesh shading. It hasn’t made any specific GPU performance claims beyond those narrow cases.

A lot of both Apple’s attention and that of the media is focused on the Neural Engine, which is what Apple calls the NPU in the M-series chips. That’s because the company is expected to announce several large language model-based AI features in iOS, macOS, and iPadOS at its developer conference next month, and this is the chip that will power some of that on the iPad and Mac.

Some neat machine-learning features are already possible on the M4—you can generate audio tracks using certain instruments in your Logic Pro projects, apply tons of image optimizations to photos with just a click or two, and so on.

M4 iPad Pro review: Well, now you’re just showing off Read More »

m2-ipad-air-review:-the-everything-ipad

M2 iPad Air review: The everything iPad

breath of fresh air —

M2 Air won’t draw new buyers in, but if you like iPads, these do all you need.

  • The new 13-inch iPad Air with the Apple M2 processor inside.

    Andrew Cunningham

  • In portrait mode. The 13-inch model is a little large for dedicated tablet use, but if you do want a gigantic tablet, the $799 price is appealing.

    Andrew Cunningham

  • The Apple Pencil Pro attaches, pairs, and charges via a magnetic connection on the edge of the iPad.

    Andrew Cunningham

  • In the Magic Keyboard. This kickstand-less case is still probably the best way to make the iPad into a true laptop replacement, though it’s expensive and iPadOS is still a problem.

    Andrew Cunningham

  • The tablet’s USB-C port, used for charging and connecting to external accessories.

    Andrew Cunningham

  • Apple’s Smart Folio case. The magnets on the cover will scoot up and down the back of the iPad, allowing you a bit of flexibility when angling the screen.

    Andrew Cunningham

  • The Air’s single-lens, flash-free camera, seen here peeking through the Smart Folio case.

    Andrew Cunningham

The iPad Air has been a lot of things in the last decade-plus. In 2013 and 2014, the first iPad Airs were just The iPad, and the “Air” label simply denoted how much lighter and more streamlined they were than the initial 2010 iPad and 2011’s long-lived iPad 2. After that, the iPad Air 2 survived for years as an entry-level model, as Apple focused on introducing and building out the iPad Pro.

The Air disappeared for a while after that, but it returned in 2019 as an in-betweener model to bridge the gap between the $329 iPad (no longer called “Air,” despite reusing the first-gen Air design) and more-expensive and increasingly powerful iPad Pros. It definitely made sense to have a hardware offering to span the gap between the basic no-frills iPad and the iPad Pro, but pricing and specs could make things complicated. The main issue for the last couple of years has been the base Air’s 64GB of storage—scanty enough that memory swapping doesn’t even work on it— and the fact that stepping up to 256GB brought the Air too close to the price of the 11-inch iPad Pro.

Which brings us to the 2024 M2 iPad Air, now available in 11-inch and 13-inch models for $599 and $799, respectively. Apple solved the overlap problem this year partly by bumping the Air’s base storage to a more usable 128GB and partly by making the 11-inch iPad Pro so much more expensive that it almost entirely eliminates any pricing overlap (only the 1TB 11-inch Air, at $1,099, is more expensive than the cheapest 11-inch iPad Pro).

I’m not sure I’d go so far as to call the new Airs the “default” iPad for most buyers—the now-$349 10th-gen iPad still does everything the iPad is best at for less money, and it’s still all you really need if you just want a casual gaming, video streaming, and browsing tablet (or a tablet for a kid). But the M2 Air is the iPad that best covers the totality of everything the iPad can do from its awkward perch, stuck halfway between the form and function of the iPhone and the Mac.

Not quite a last-gen iPad Pro

The new iPad Airs have a lot in common with the M2 iPad Pro from 2022. They have the same screen sizes and resolutions, the same basic design, they work with the same older Magic Keyboard accessories (not the new ones with the function rows, metal palm rests, and larger trackpads, which are reserved for the iPad Pro), and they obviously have the same Apple M2 chip.

Performance-wise, nothing we saw in the benchmarks we ran was surprising; the M2’s CPU and (especially) its GPU are a solid generational jump up from the M1, and the M1 is already generally overkill for the vast majority of iPad apps. The M3 and M4 are both significantly faster than the M2, but the M2 is still unquestionably powerful enough to do everything people currently use iPads to do.

That said, Apple’s decision to use an older chip rather than the M3 or M4 does mean the new Airs come into the world missing some capabilities that have come to other Apple products announced in the last six months or so. That list includes hardware-accelerated ray-tracing on the GPU, hardware-accelerated AV1 video codec decoding, and, most importantly, a faster Neural Engine to help power whatever AI stuff Apple’s products pick up in this fall’s big software updates.

The 13-inch Air’s screen has the same resolution and pixel density (2732×2048, 264 PPI) as the last-generation 12.9-inch iPad Pro. And unlike the 13-inch Pro, which truly is a 13-inch screen, Apple’s tech specs page says the 13-inch Air is still using a 12.9-inch screen, and Apple is just rounding up to get to 13.

The 13-inch Air display does share some other things with the last-generation iPad Pro screen, including P3 color, a 600-nit peak brightness. Its display panel has been laminated to the front glass, and it has an anti-reflective coating (two of the subtle but important quality improvements the Air has that the $349 10th-gen iPad doesn’t). But otherwise it’s not the same panel as the M2 Pro; there’s no mini LED, no HDR support, and no 120 Hz ProMotion support.

M2 iPad Air review: The everything iPad Read More »

forget-aerobars:-ars-tries-out-an-entire-aerobike

Forget aerobars: Ars tries out an entire aerobike

Here comes a future —

Taking to the road in a modern, high-speed version of a 40-year-old dream.

Image of a aerodynamic recumbent bicycle parked in front of a pickup truck.

Enlarge / The Velomobile Bülk, with its hood in place. Note the hood has an anti-fog covering on the visor (which is flipped up). The two bumps near the front of the hood are there to improve clearance for the cyclist’s knees.

JOHN TIMMER

My brain registered that I was clearly cycling. My feet were clipped in to pedals, my legs were turning crank arms, and the arms were linked via a chain to one of the wheels. But pretty much everything else about the experience felt wrong on a fundamental, almost disturbing level.

I could produce a long list of everything my mind was struggling to deal with, but two things stand out as I think back on the experience. The first is that, with the exception of my face, I didn’t feel the air flow over me as the machine surged forward down a slight slope. The second, related to the first, is that there was no indication that the surge would ever tail off if I didn’t hit the brakes.

Living the dream

My visit with a velomobile was, in some ways, a chance to reconnect with a childhood dream. I’ve always had a fascination with vehicles that don’t require fuel, like bicycles and sailboats. And during my childhood, the popular press was filled with stories about people setting human-powered speed records by putting aerodynamic fiberglass shells on recumbent bicycles. In the wake of the 1970s oil crises, I imagined a time when the roads might be filled with people cycling these pods for their commutes or covering long distances thanks to a cooler filled with drinks and snacks tucked in the back of the shell.

But the pods seemed to vanish from public consciousness as I got older, and I also learned that recumbent bikes are absolutely terrible on hills, which I’m now fond of climbing. The dreams had faded from my awareness when a reader, in response to one of our e-bike reviews, suggested I check out a velomobile. It turns out that my dreams weren’t dead; they had just relocated to Europe without mentioning it to me.

Marc Rosen and two of his velomobiles. The newer model, the Bülk, is closer to him.

Enlarge / Marc Rosen and two of his velomobiles. The newer model, the Bülk, is closer to him.

John Timmer

Velomobiles are a product category with a variety of designs and manufacturers producing them, most of them based in Europe. They’re also the fiberglass pods of my youth updated to current standards. Gone is the weight of fiberglass, and the one-off, hand-made hardware has been replaced by standardized models that have gone through refinements across generations. Safety features like lights, directionals, and mirrors are now standard.

But the prices, while not exorbitant (mostly in the $8,000–$10,000 range—for bicycles; you can pay more for far less carbon fiber), mean that living my childhood dream really wasn’t an option. The European Union-based companies don’t seem to have any agreements with US bike shops that would let me check one out in a showroom; I’ve heard of only two dealers in the US that keep velomobiles in stock, and neither is anywhere close to me. Fortunately, that didn’t preclude the option of trying one. One major vendor of velomobiles, Romania’s Velomobile World, has an ambassadors program, where people agree to let potential buyers take test rides in return for a discount on purchases.

That’s how I found myself setting out for a short spin near the Maryland-Pennsylvania border in a Velomobile Bülk owned by Marc Rosen, who also fielded a lot of my questions about the hardware.

Forget aerobars: Ars tries out an entire aerobike Read More »

outdoing-the-dinosaurs:-what-we-can-do-if-we-spot-a-threatening-asteroid

Outdoing the dinosaurs: What we can do if we spot a threatening asteroid

We'd like to avoid this.

Enlarge / We’d like to avoid this.

Science Photo Library/Andrzej Wojcicki/Getty Images

In 2005, the United States Congress laid out a clear mandate: To protect our civilization and perhaps our very species, by 2020, the nation should be able to detect, track, catalog, and characterize no less than 90 percent of all near-Earth objects at least 140 meters across.

As of today, four years after that deadline, we have identified less than half and characterized only a small percentage of those possible threats. Even if we did have a full census of all threatening space rocks, we do not have the capabilities to rapidly respond to an Earth-intersecting asteroid (despite the success of NASA’s Double-Asteroid Redirection Test (DART) mission).

Some day in the finite future, an object will pose a threat to us—it’s an inevitability of life in our Solar System. The good news is that it’s not too late to do something about it. But it will take some work.

Close encounters

The dangers are, to put it bluntly, everywhere around us. The International Astronomical Union’s Minor Planet Center, which maintains a list of (no points award for guessing correctly) minor planets within the Solar System, has a running tally. At the time of the writing of this article, the Center has recorded 34,152 asteroids with orbits that come within 0.05 AU of the Earth (an AU is one astronomical unit, the average distance between the Earth and the Sun).

These near-Earth asteroids (or NEAs for short, sometimes called NEOs, for near-Earth objects) aren’t necessarily going to impact the Earth. But they’re the most likely ones to do it; in all the billions of kilometers that encompass the wide expanse of our Solar System, these are the ones that live in our neighborhood.

And impact they do. The larger planets and moons of our Solar System are littered with the craterous scars of past violent collisions. The only reason the Earth doesn’t have the same amount of visible damage as, say, the Moon is that our planet constantly reshapes its surface through erosion and plate tectonics.

It’s through craters elsewhere that astronomers have built up a sense of how often a planet like the Earth experiences a serious impact and the typical sizes of those impactors.

Tiny things happen all the time. When you see a beautiful shooting star streaking across the night sky, that’s from the “impact” of an object somewhere between the size of a grain of sand and a tiny pebble striking our atmosphere at a few tens of thousands of kilometers per hour.

Every few years or so, an object 10 meters across hits us; when it does, it delivers energy roughly equivalent to that of our earliest atomic weapons. Thankfully, most of the Earth is open ocean, and most impactors of this class burst apart in the upper atmosphere, so we typically don’t have to worry too much about them.

The much larger—but thankfully much rarer—asteroids are what cause us heartburn. This is where we get into the delightful mathematics of attempting to calculate an existential risk to humanity.

At one end of the scale, we have the kind of stuff that kills dinosaurs and envelops the globe in a shroud of ash. These rocks are several kilometers across but only come into Earth-crossing trajectories every few million years. One of them would doom us—certainly our civilization and likely our species. The combination of the unimaginable scale of devastation and the incredibly small likelihood of it occurring puts this kind of threat almost beyond human comprehension—and intervention. For now, we just have to hope that our time isn’t up.

Then there are the in-betweeners. These are the space rocks starting at a hundred meters across. Upon impact, they release a minimum of 30 megatons of energy, which is capable of leaving a crater a couple of kilometers across. Those kinds of dangers present themselves roughly every 10,000 years.

That’s an interesting time scale. Our written history stretches back thousands of years, and our institutions have existed for thousands of years. We can envision our civilization, our ways of life, and our humanity continuing into the future for thousands of years.

This means that at some point, either we or our descendants will have to deal with a threat of this magnitude. Not a rock large enough to hit the big reset button on life but powerful enough to present a scale of disaster not yet seen in human history.

Outdoing the dinosaurs: What we can do if we spot a threatening asteroid Read More »

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Professor sues Meta to allow release of feed-killing tool for Facebook

Professor sues Meta to allow release of feed-killing tool for Facebook

themotioncloud/Getty Images

Ethan Zuckerman wants to release a tool that would allow Facebook users to control what appears in their newsfeeds. His privacy-friendly browser extension, Unfollow Everything 2.0, is designed to essentially give users a switch to turn the newsfeed on and off whenever they want, providing a way to eliminate or curate the feed.

Ethan Zuckerman, a professor at University of Massachusetts Amherst, is suing Meta to release a tool allowing Facebook users to

Ethan Zuckerman, a professor at University of Massachusetts Amherst, is suing Meta to release a tool allowing Facebook users to “unfollow everything.” (Photo by Lorrie LeJeune)

The tool is nearly ready to be released, Zuckerman told Ars, but the University of Massachusetts Amherst associate professor is afraid that Facebook owner Meta might threaten legal action if he goes ahead. And his fears appear well-founded. In 2021, Meta sent a cease-and-desist letter to the creator of the original Unfollow Everything, Louis Barclay, leading that developer to shut down his tool after thousands of Facebook users had eagerly downloaded it.

Zuckerman is suing Meta, asking a US district court in California to invalidate Meta’s past arguments against developers like Barclay and rule that Meta would have no grounds to sue if he released his tool.

Zuckerman insists that he’s “suing Facebook to make it better.” In picking this unusual legal fight with Meta, the professor—seemingly for the first time ever—is attempting to tip Section 230’s shield away from Big Tech and instead protect third-party developers from giant social media platforms.

To do this, Zuckerman is asking the court to consider a novel Section 230 argument relating to an overlooked provision of the law that Zuckerman believes protects the development of third-party tools that allow users to curate their newsfeeds to avoid objectionable content. His complaint cited case law and argued:

Section 230(c)(2)(B) immunizes from legal liability “a provider of software or enabling tools that filter, screen, allow, or disallow content that the provider or user considers obscene, lewd, lascivious, filthy, excessively violent, harassing, or otherwise objectionable.” Through this provision, Congress intended to promote the development of filtering tools that enable users to curate their online experiences and avoid content they would rather not see.

Unfollow Everything 2.0 falls in this “safe harbor,” Zuckerman argues, partly because “the purpose of the tool is to allow users who find the newsfeed objectionable, or who find the specific sequencing of posts within their newsfeed objectionable, to effectively turn off the feed.”

Ramya Krishnan, a senior staff attorney at the Knight Institute who helped draft Zuckerman’s complaint, told Ars that some Facebook users are concerned that the newsfeed “prioritizes inflammatory and sensational speech,” and they “may not want to see that kind of content.” By turning off the feed, Facebook users could choose to use the platform the way it was originally designed, avoiding being served objectionable content by blanking the newsfeed and manually navigating to only the content they want to see.

“Users don’t have to accept Facebook as it’s given to them,” Krishnan said in a press release provided to Ars. “The same statute that immunizes Meta from liability for the speech of its users gives users the right to decide what they see on the platform.”

Zuckerman, who considers himself “old to the Internet,” uses Facebook daily and even reconnected with and began dating his now-wife on the platform. He has a “soft spot” in his heart for Facebook and still finds the platform useful to keep in touch with friends and family.

But while he’s “never been in the ‘burn it all down’ camp,” he has watched social media evolve to give users less control over their feeds and believes “that the dominance of a small number of social media companies tends to create the illusion that the business model adopted by them is inevitable,” his complaint said.

Professor sues Meta to allow release of feed-killing tool for Facebook Read More »

hands-on-with-the-new-ipad-pros-and-airs:-a-surprisingly-refreshing-refresh

Hands-on with the new iPad Pros and Airs: A surprisingly refreshing refresh

Apple's latest iPad Air, now in two sizes. The Magic Keyboard accessory is the same one that you use with older iPad Airs and Pros, though they can use the new Apple Pencil Pro.

Enlarge / Apple’s latest iPad Air, now in two sizes. The Magic Keyboard accessory is the same one that you use with older iPad Airs and Pros, though they can use the new Apple Pencil Pro.

Andrew Cunningham

Apple has a new lineup of iPad Pro and Air models for the first time in well over a year. Most people would probably be hard-pressed to tell the new ones from the old ones just by looking at them, but after hands-on sessions with both sizes of both tablets, the small details (especially for the Pros) all add up to a noticeably refined iPad experience.

iPad Airs: Bigger is better

But let’s begin with the new Airs since there’s a bit less to talk about. The 11-inch iPad Air (technically the sixth-generation model) is mostly the same as the previous-generation A14 and M1 models, design-wise, with identical physical dimensions and weight. It’s still the same slim-bezel design Apple introduced with the 2018 iPad Pro, just with a 60 Hz LCD display panel and Touch ID on the power button rather than Face ID.

So when Apple says the device has been “redesigned,” the company is mainly referring to the fact that the webcam is now mounted on the long edge of the tablet rather than the short edge. This makes its positioning more laptop-y when it’s docked to the Magic Keyboard or some other keyboard.

The most welcome change to the Air is the introduction of a 13-inch model (blessedly, no longer “12.9 inches”). It looks like the old 12.9-inch iPad Pro design from circa 2018 but with the simpler single-lens 12 MP camera and the Touch ID button rather than the Face ID sensor.

The new iPad Air.

Enlarge / The new iPad Air.

Andrew Cunningham

With the iPad Pro and the Air next to each other, it’s clear which has the superior screen—the 120 Hz refresh rate of ProMotion and the infinite contrast of OLED are definitely major points in the Pro’s favor. But if you’re just looking for a big screen for watching videos, reading books, or playing games, or if you’re just looking for a general-use laptop replacement tablet, Apple is still using a great 60 Hz LCD panel here. And the $799 price tag is considerably lower than any of Apple’s past 12.9-inch iPad Pros.

Like the 15-inch MacBook Air, it’s a way for people to get a bigger screen without paying for advanced screen technologies or faster processors if they don’t want or need them. It’s hard to find a downside to that, as long as you’re OK with iPadOS’ differences and restrictions relative to macOS.

Hands-on with the new iPad Pros and Airs: A surprisingly refreshing refresh Read More »

the-surprise-is-not-that-boeing-lost-commercial-crew-but-that-it-finished-at-all

The surprise is not that Boeing lost commercial crew but that it finished at all

Boeing really is going —

“The structural inefficiency was a huge deal.”

Boeing's Starliner spacecraft is lifted to be placed atop an Atlas V rocket for its first crewed launch.

Enlarge / Boeing’s Starliner spacecraft is lifted to be placed atop an Atlas V rocket for its first crewed launch.

United Launch Alliance

NASA’s senior leaders in human spaceflight gathered for a momentous meeting at the agency’s headquarters in Washington, DC, almost exactly ten years ago.

These were the people who, for decades, had developed and flown the Space Shuttle. They oversaw the construction of the International Space Station. Now, with the shuttle’s retirement, these princely figures in the human spaceflight community were tasked with selecting a replacement vehicle to send astronauts to the orbiting laboratory.

Boeing was the easy favorite. The majority of engineers and other participants in the meeting argued that Boeing alone should win a contract worth billions of dollars to develop a crew capsule. Only toward the end did a few voices speak up in favor of a second contender, SpaceX. At the meeting’s conclusion, NASA’s chief of human spaceflight at the time, William Gerstenmaier, decided to hold off on making a final decision.

A few months later, NASA publicly announced its choice. Boeing would receive $4.2 billion to develop a “commercial crew” transportation system, and SpaceX would get $2.6 billion. It was not a total victory for Boeing, which had lobbied hard to win all of the funding. But the company still walked away with nearly two-thirds of the money and the widespread presumption that it would easily beat SpaceX to the space station.

The sense of triumph would prove to be fleeting. Boeing decisively lost the commercial crew space race, and it proved to be a very costly affair.

With Boeing’s Starliner spacecraft finally due to take flight this week with astronauts on board, we know the extent of the loss, both in time and money. Dragon first carried people to the space station nearly four years ago. In that span, the Crew Dragon vehicle has flown thirteen public and private missions to orbit. Because of this success, Dragon will end up flying 14 operational missions to the station for NASA, earning a tidy fee each time, compared to just six for Starliner. Through last year, Boeing has taken $1.5 billion in charges due to delays and overruns with its spacecraft development.

So what happened? How did Boeing, the gold standard in human spaceflight for decades, fall so far behind on crew? This story, based largely on interviews with unnamed current and former employees of Boeing and contractors who worked on Starliner, attempts to provide some answers.

The early days

When the contracts were awarded, SpaceX had the benefit of working with NASA to develop a cargo variant of Dragon, which by 2014 was flying regular missions to the space station. But the company had no experience with human spaceflight. Boeing, by contrast, had decades of spaceflight experience, but it had to start from scratch with Starliner.

Each faced a deeper cultural challenge. A decade ago, SpaceX was deep into several major projects, including developing a new version of the Falcon 9 rocket, flying more frequently, experimenting with landing and reuse, and doing cargo supply missions. This new contract meant more money but a lot more work. A NASA engineer who worked closely with both SpaceX and Boeing in this time frame recalls visiting SpaceX and the atmosphere being something like a frenzied graduate school, where all of the employees were being pulled in different directions. Getting engineers to focus on Crew Dragon was difficult.

But at least SpaceX was in its natural environment. Boeing’s space division had never won a large fixed-price contract. Its leaders were used to operating in a cost-plus environment, in which Boeing could bill the government for all of its expenses and earn a fee. Cost overruns and delays were not the company’s problem—they were NASA’s. Now Boeing had to deliver a flyable spacecraft for a firm, fixed price.

Boeing struggled to adjust to this environment. When it came to complicated space projects, Boeing was used to spending other people’s money. Now, every penny spent on Starliner meant one less penny in profit (or, ultimately, greater losses). This meant that Boeing allocated fewer resources to Starliner than it needed to thrive.

“The difference between the two company’s cultures, design philosophies, and decision-making structures allowed SpaceX to excel in a fixed-price environment, where Boeing stumbled, even after receiving significantly more funding,” said Lori Garver in an interview. She was deputy administrator of NASA from 2009 to 2013 during the formative years of the commercial crew program and is the author of Escaping Gravity.

So Boeing faced financial pressure from the beginning. At the same time, it was confronting major technical challenges. Building a human spacecraft is very difficult. Some of the biggest hurdles would be flight software and propulsion.

The surprise is not that Boeing lost commercial crew but that it finished at all Read More »

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There’s never been a better time to get into Fallout 76

More players have been emerging from this vault lately than have in years.

Enlarge / More players have been emerging from this vault lately than have in years.

Samuel Axon

War never changes, but Fallout 76 sure has. The online game that launched to a negative reception with no NPCs but plenty of bugs has mutated in new directions since its 2018 debut. Now it’s finding new life thanks to the wildly popular Fallout TV series that debuted a couple of weeks ago.

In truth, it never died, though it has stayed in decidedly niche territory for the past six years. Developer Bethesda Game Studios has released regular updates fixing (many of) the bugs, adding new ways to play, softening the game’s rough edges, and yes, introducing Fallout 3- or Fallout 4-like, character-driven quest lines with fully voiced NPCs—something many players felt was missing in the early days.

It’s still not for everybody, but for a select few of us who’ve stuck with it, there’s nothing else quite like it.

Like many older online games, it eventually settled into a situation where most of the players were high-level veterans on the PC and PlayStation platforms. (Microsoft’s Game Pass kept a steady trickle of new players coming in on the Xbox.) That’s all changed now, though; thanks to the TV series, the low-level newbies now outnumber the vets. There’s a wide range of players on every server, and the community’s reputation for being unusually welcoming has held strong amid the influx.

If you’re looking to give it a shot, here’s what you need to know.

A weirdly welcoming wasteland

I generally find the communities in most online games off-putting and toxic. I enjoy the gameplay in Overwatch, for example, but a whole buffet of bad actors makes it a poor experience for me a lot of the time.

That’s not the case with Fallout 76. It’s a phenomenon I also observed with No Man’s Sky’s online community: Games that had disastrous launches that drove away the enthusiastic core gamer crowd early on end up having the best communities.

With Fallout 76, the first few weeks were a storm of negativity like no other. But once the folks who were unimpressed calmed down and moved on, the smaller cadre of people who actually liked the game formed a strong bond. The community was small enough that bad behavior could have social consequences, and it turned out that the kinds of people who stick with a game like Fallout 76 tend to be patient and gracious. Who knew?

These donation boxes give experienced players a chance to give back.

Enlarge / These donation boxes give experienced players a chance to give back.

Samuel Axon

For example, there has long been a tradition of experienced players dropping valuable healing items and ammunition by the game’s starting area for newbies to grab. Fallout 76 has strong survival elements, especially at the start, so those gifts make a big difference. This gifting became so common that Bethesda formalized it with a donation box in that starter area. In fact, there are donation boxes scattered all around the game’s map now, and they almost always have stuff in them.

Players will generally be happy to jump on voice chat and talk through the game’s concepts with you or help you defeat difficult enemies. That extends to some communities that talk about the game outside the game, too. (Be sure to look up the subreddit r/fo76FilthyCasuals and its associated Discord; they’re great places to make friends and get advice.)

Time will tell how all that holds as a huge influx of new players shifts the makeup of the community, but so far so good.

There’s never been a better time to get into Fallout 76 Read More »