I'm not a devoted user of the app, but I was aware of its history, which is why I was surprised to see news of a "Notepad++ for Mac" port making the rounds last week, as though it were a port of the original available from the Notepad++ website.

Apparently, this news surprised Ho as well, who claims that the Mac version and its author, Andrey Letov, are "using the Notepad++ trademark (the name) without permission."

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The canary trap is a simple tool often used to identify leakers or double agents. To make one, you simply share a document, image, or database but make tiny changes that are unique to each recipient. That way, if those changes show up verbatim in any leak of the information, you know immediately which recipient was behind the leak.

You don't often see canary traps in the news, though they have long been a staple of spy fiction (and practice), so an account out of Canada last week caught my eye.

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“The paper's authors made some very attention-grabbing claims about the benefits of ChatGPT on learning outcomes,” said Ben Williamson, a senior lecturer at the Centre for Research in Digital Education and the Edinburgh Futures Institute at the University of Edinburgh in Scotland, in an email to Ars. “It was treated by many on social media as one of the first pieces of hard, gold standard evidence that ChatGPT, and generative AI more broadly, benefits learners.”

The retracted paper attempted to quantify “the effect of ChatGPT on students’ learning performance, learning perception, and higher-order thinking” by analyzing results from 51 previous research studies. Its meta-analysis calculated the effect size between various studies’ experimental groups that used ChatGPT in education and control groups that did not use the AI chatbot.

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"GameStop’s ~1,600 US locations give eBay a national network for authentication, intake, fulfillment, and live commerce," GameStop Chairman and CEO Ryan Cohen wrote in a letter to eBay Chairman Paul Pressler.

eBay's market capitalization is over four times larger than GameStop's. GameStop faces skepticism about the viability of its offer but says it will obtain debt financing and pay with a mix of cash and stock.

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As we learned a couple of weeks ago, there have been tweaks to the amount of energy that the cars' new hybrid power units can regenerate and deploy via the electric motor that contributes almost half of the car's power output. The first three races of this season were frenetic, but they alarmed many longtime fans, as the cars are now too energy-limited to be driven flat-out during qualifying; that energy limitation also led to cars swapping positions multiple times, derisively dubbed "yo-yo" racing by critics.

The new limits on harvesting energy from the V6 to charge the battery on the move should reduce the potential for huge speed differentials like the one that caused Oliver Bearman's crash in Japan, and energy management was (thankfully) not much of a topic this weekend. Miami's layout definitely helps there, with plenty of braking zones to help regenerate much of the now-allowed 7 MJ each lap.

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In patch series notes for an amdgpu driver update posted on Friday (and noticed by Phoronix), AMD's Harry Wentland says that the company is finally adding HDMI FRL (Fixed Rate Link) support to the popular Linux display driver. That's the feature that allows for higher bandwidth on compatible HDMI cables compared to the TMDS standard found on HDMI 2.0 and earlier. That in turn enables direct support for higher resolutions, dynamic HDR, and features like Variable Refresh Rate that aren't supported in HDMI 2.0.

Wentland notes that this update is still just "a representative subset of HDMI compliance," in part because it is missing the code to support the Display Stream Compression (DSC) that allows for even higher resolutions and frame rates up to 10K at 100 Hz. But Wentland adds that DSC support "is still being tested and will be sent out later," and that "a full compliance run" for HDMI 2.1 is "in the works." An AMD driver developer with the handle agd5f also commented on Phoronix, noting that "a full implementation [of HDMI 2.1] will ultimately be available once the patches are ready and have completed compliance testing."

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According to a Sunday court filing from OpenAI, Musk messaged OpenAI President Greg Brockman two days ahead of the trial to "gauge interest" in a possible settlement. Brockman promptly responded, suggesting that "both sides" drop their claims. But Musk refused, then appeared to grow threatening enough that the court may allow Brockman to testify on the message as evidence supposedly revealing Musk's true motives for pursuing the litigation.

"By the end of this week, you and Sam will be the most hated men in America," Musk responded to Brockman's suggestion that all claims be dropped. "If you insist, so it will be."

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Now, the $599 entry-level Mac mini has also been removed from Apple's store. The cheapest Mac mini you can currently order from Apple costs $799, which gets you an M4 chip, 16GB of RAM, and 512GB of storage.

This isn’t technically a price hike; Apple has charged the same amount for these specs since launching the M4 Mac mini in late 2024. But now that the basic model with 256GB of storage has apparently been discontinued, it’s no longer possible to buy a Mac mini for its original $599 starting price unless you can find stock left over at some third-party retailer somewhere.

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Approvals for about 165 onshore wind projects on private lands are being stalled by the Department of Defense, including wind farms that were awaiting final sign-off, others in the middle of negotiations, and some that typically would not require oversight by the department, according to the American Clean Power Association (ACP) and people close to the matter.

Wind farms require routine approval from the Defense Department to ensure they do not interfere with radar systems. This typically involves the level of risk being assessed and the developer paying an agreed sum for the army to update its radar filter system so it can locate the windmill. Some projects can be deemed not to pose a risk due to their distance from army facilities and flight paths. Normally these assessments can take as little as a few days to complete.

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Unlike more common software programs and plugins that simulate violin sounds via sampling, averaging the final sound from thousands of notes, the MIT model is based on the fundamental physics of the instrument. “We’re not saying that we can reproduce the artisan’s magic,” said co-author Nicholas Makris. “We’re just trying to understand the physics of violin sound, and perhaps help luthiers in the design process.”

Violin acoustics has long been a hot topic of research among acousticians, particularly when it comes to unlocking the secret to the superior sounds of violins crafted during the so-called "Golden Age"—notably the instruments of famed Cremona luthier Antonio Stradivari, as well as those of the Amati family and Giuseppe Guarneri. There are plenty of variables to consider, given a violin's acoustic complexity.

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At the Consumer Electronics Show in 2020, Toyota CEO Akio Toyoda pledged to build a city of the future, a place where researchers, engineers, and scientists could live and work together. It was framed as the start of a transformation for the world's largest car company, moving it toward becoming a fully fledged mobility company.

Six months ago, after Toyota spent an estimated $10 billion to build an urban paradise atop a disused factory, the first residents moved in. One-hundred handpicked "Weavers," residents chosen to boost the tech cred of the sensor-laden mini-metropolis, began settling in.

Last week, I got a chance to check it out. Here's what I learned while wandering the streets of Toyota's vision of the future.

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Physics of why dolphins swim so fast

Dolphins are very good swimmers, but the exact mechanisms by which they achieve their impressive speed and agility in water have remained murky. Japanese scientists from the University of Osaka ran multiple supercomputer simulations to learn more about how dolphins optimize their propulsion and found it has to do with the vortices, or eddies, produced by dolphin kicks, according to a paper published in the journal Physical Review Fluids.

Per the authors, when dolphins flap their tails up and down, the kicking motion pushes water backward and produces swirling currents of varying sizes. The computer simulations enabled the team to break down those different sizes, revealing that the initial tail oscillations produce large vortex rings that generate thrust, and those larger ones then produce many more smaller vortices. However, the smaller ones don't contribute to the forward motion.

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The science of acoustic fire suppression, which has long been known and documented in scientific literature and the press, works by vibrating oxygen molecules away from a fuel source, depriving the fire of a critical component needed for combustion.

Indeed, after just a few seconds of infrasound, the tiny kitchen blaze goes out.

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In a new paper published this week in Nature, researchers from Oxford University’s Internet Institute found that specially tuned AI models tend to mimic the human tendency to occasionally “soften difficult truths” when necessary “to preserve bonds and avoid conflict.” These warmer models are also more likely to validate a user's expressed incorrect beliefs, the researchers found, especially when the user shares that they're feeling sad.

How do you make an AI seem “warm”?

In the study, the researchers defined the "warmness" of a language model based on "the degree to which its outputs lead users to infer positive intent, signaling trustworthiness, friendliness, and sociability." To measure the effect of those kinds of language patterns, the researchers used supervised fine-tuning techniques to modify four open-weights models (Llama-3.1-8B-Instruct, Mistral-Small-Instruct-2409, Qwen-2.5-32B-Instruct, Llama-3.1-70B-Instruct), and one proprietary model (GPT-4o).

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I mean, sure, according to Valve’s own statistics, Microsoft remains dominant. Over 92 percent of PCs in the Steam Hardware Survey run some version of Windows. But five years ago, this number was just over 96 percent. Ten years ago, it was just under 96 percent. Fifteen years ago? It was 96 percent. Go back any further than that and Steam only runs on Windows in the first place, itself a testament to Microsoft's ubiquity.

Between April 2021 and now, Linux’s share has climbed from under 1 percent to over 5 percent. This is a small number, and it's not all SteamOS (Valve's OS isn't broken out, but Arch, the base distribution for SteamOS, accounts for about 0.33 of that just-over-5-percent). But it’s also more than these numbers have ever moved. By making Windows games run on Linux, rather than trying to push game developers to make Linux-native ports, Valve has done via organic word-of-mouth success what the company utterly failed to do in the early 2010s when it tried to take on Windows directly.

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It wasn't until he was transferred to a Yale School of Medicine hospital for higher-level care that doctors finally identified the cause of his ghastly affliction: a common free-living amoeba that can be found almost anywhere, including tap water. But by then, it was too late. The man's case is reported in the journal Emerging Infectious Diseases. (A graphic image of his case is here, but be warned.)

Unicellular terror

The amoeba the doctors found was Acanthamoeba, which is known to cause such horrifying infections. But it's rare, and when it explodes into a full-body, often deadly malady, it tends to be in patients who have compromised immune systems or are otherwise debilitated. As such, the opportunistic pathogen is most often found in people with HIV/AIDS, cancers, and diabetes, as well as those on powerful immunosuppressive drugs, like transplant patients. The man didn't fit into any of these categories.

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Attempts to connect to most Ubuntu and Canonical webpages and download OS updates from Ubuntu servers have consistently failed over the past 24 hours. Updates from mirror sites, however, have continued to work normally. A Canonical status page said: “Canonical’s web infrastructure is under a sustained, cross-border attack and we are working to address it.” Other than that, Ubuntu and Canonical officials have maintained radio silence since the outage began.

A decades-long scourge

A group sympathetic to the Iranian government has taken credit for the outage. According to posts on Telegram and other social media, the group is responsible for a DDoS attack using Beam, an operation that claims to test the ability of servers to operate under heavy loads but, like other “stressors,” are, in fact, fronts for services miscreants pay for to take down third-party sites. In recent days, the same pro-Iran group has taken credit for DDoSes on eBay.

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The resolution to prohibit senators from trading on prediction markets passed yesterday by unanimous consent. The action amends the Senate's conflict-of-interest rules and does not require approval by the House of Representatives. The House has a pending resolution that would impose a similar rule on its own members.

“United States Senators have no business engaging in speculative activities like prediction markets while collecting a taxpayer-funded paycheck, period,” said Sen. Bernie Moreno (R-Ohio), who introduced the resolution. “Serving in Congress should never be about finding new ways to profit; it should be about delivering results for the American people.”

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Under the law, developers of websites, apps, software, or other services designed to "nudify" images risk extensive damages, including punitive damages, if a victim decides to sue. Their offending products could also be blocked in the state. Additionally, Minnesota's attorney general could impose fines up to $500,000 per fake AI nude flagged. Any fines collected would be used to fund services for victims of "sexual assault, general crime, domestic violence, and child abuse," the law stipulates.

On Wednesday, the Minnesota Senate unanimously voted 65–0 to pass the law. That vote came after the bill just as quickly passed in the House last week, the 19th News reported. Gov. Tim Walz is expected to sign the law when it reaches his desk, and if that happens, the state will start enforcing the ban this August.

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The Amazon Web Services (AWS) dashboard posted an April 30 update describing how its UAE and Bahrain cloud regions “suffered damage as a result of the conflict in the Middle East” and are unable to support customer applications. The update also said that “relevant billing operations are currently suspended while we restore normal operations” in a process that “is expected to take several months.”

That wording suggests Amazon will continue to avoid billing AWS customers in the affected regions—ME-CENTRAL-1 and ME-SOUTH-1—after it initially waived all usage-related charges for March 2026 at an estimated cost of $150 million.

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