Ever since a mourning mother, Megan Garcia, filed a lawsuit alleging that Character.AI's dangerous chatbots caused her son's suicide , Google has maintained that—so it could dodge claims that it had contributed to the platform's design and was unjustly enriched—it had nothing to do with C.AI's development.

But Google lost its motion to dismiss the lawsuit on Wednesday after a US district judge, Anne Conway, found that Garcia had plausibly alleged that Google played a part in C.AI's design by providing a component part and "substantially" participating "in integrating its models" into C.AI. Garcia also plausibly alleged that Google aided and abetted C.AI in harming her son, 14-year-old Sewell Setzer III.

Google similarly failed to toss claims of unjust enrichment, as Conway suggested that Garcia plausibly alleged that Google benefited from access to Setzer's user data. The only win for Google was a dropped claim that C.AI makers were guilty of intentional infliction of emotional distress, with Conway agreeing that Garcia didn't meet the requirements, as she wasn't "present to witness the outrageous conduct directed at her child."

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Do you miss the feel of tactile buttons on your kitchen appliances or lament car manufacturers' insistence on touchscreens? Have you ever found yourself clumsily fumbling with the door handles of a vehicle or distracted by the bright blue light beaming from your vacuum or Wi-Fi router?

If so, you're not alone. The way technology gadgets are designed largely relies on things like blue, often LED, lights, flat resistive or capacitive touch input, and software. Some, like Amber Case, founder of the Calm Tech Institute , believe that these design choices distract from devices' purpose and functionality and are calling for a new approach to product design.

"Calm Tech Institute is kind of a consumer advocacy body that's collecting stories and research from neuroscientists that says, look at how the mind wants texture, and look at how it wants physical buttons, and there's a part of your mind that needs [those]," Case told Ars Technica. "When we don't have it and we replace it with glass, we're not only losing something about human experience, but we're actually causing the mind stress.”

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Three-dimensional printing is transforming medical care, letting the health care field shift from mass-produced solutions to customized treatments tailored to each patient’s needs. For instance, researchers are developing 3D-printed prosthetic hands specifically designed for children, made with lightweight materials and adaptable control systems.

These continuing advancements in 3D-printed prosthetics demonstrate their increasing affordability and accessibility. Success stories like this one in personalized prosthetics highlight the benefits of 3D printing, in which a model of an object produced with computer-aided design software is transferred to a 3D printer and constructed layer by layer.

We are a biomedical engineer and a chemist who work with 3D printing. We study how this rapidly evolving technology provides new options not just for prosthetics but for implants, surgical planning, drug manufacturing, and other health care needs. The ability of 3D printing to make precisely shaped objects in a wide range of materials has led to, for example, custom replacement joints and custom-dosage, multidrug pills.

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Self-hosting is having a moment, even if it's hard to define exactly what it is.

It's a niche that goes beyond regular computing devices and networks but falls short of a full-on home lab . (Most home labs involve self-hosting, but not all self-hosting makes for a home lab.) It adds privacy, provides DRM-free alternatives , and reduces advertising. It's often touted as a way to get more out of your network-attached storage (NAS), but it's much more than just backup and media streaming.

Is self-hosting just running services on your network for which most people rely on cloud companies? Broadly, yes. But take a look at the selfh.st site/podcast/newsletter, the r/selfhosted subreddit , and all the GitHub project pages that link to one another, and you'll also find things that no cloud provider offers.

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MOUNTAIN VIEW, Calif.—Google rolled out early versions of Gemini 2.5 earlier this year. Marking a significant improvement over the 2.0 branch. For the first time, Google's chatbot felt competitive with the likes of ChatGPT, but it's been "experimental" and later "preview" since then. At I/O 2025, Google announced general availability for Gemini 2.5, and these models will soon be integrated with Chrome. There's also a fancy new subscription plan to get the most from Google's AI. You probably won't like the pricing, though.

Gemini 2.5 goes gold

Even though Gemini 2.5 was revealed a few months ago, the older 2.0 Flash has been the default model all this time. Now that 2.5 is finally ready, the 2.5 Flash model will be swapped in as the new default. This model has built-in simulated reasoning, so its outputs are much more reliable than 2.0 Flash.

Google says the release version of 2.5 Flash is better at reasoning, coding, and multimodality, but it uses 20–30 percent fewer tokens than the preview version. This edition is now live in Vertex AI, AI Studio, and the Gemini app. It will be made the default model in early June.

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In sparking his global trade war, Donald Trump seems to have maintained a glaring blind spot when it comes to protecting one of America's greatest trade advantages: the export of digital services.

Experts have warned that the consequences for Silicon Valley could be far-reaching.

In a report released Tuesday, an intelligence firm that tracks global trade risks, Allianz Trade, shared results of a survey of 4,500 firms worldwide, designed "to capture the impact of the escalation of trade tensions." Amid other key findings, the group warned that the US's fixation on the country's trillion-dollar goods deficit risks rocking "the fastest-growing segment of global trade," America's "invisible exports" of financial and digital services.

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A US-based propulsion company, Venus Aerospace, said Wednesday it had completed a short flight test of its rotating detonation rocket engine at Spaceport America in New Mexico.

The company's chief executive and co-founder, Sassie Duggleby, characterized the flight as "historic." It is believed to be the first US-based flight test of an idea that has been discussed academically for decades, a rotating detonation rocket engine. The concept has previously been tested in a handful of other countries, but never with a high-thrust engine.

"By proving this engine works beyond the lab, Venus brings the world closer to a future where hypersonic travel—traversing the globe in under two hours—becomes possible," Duggleby told Ars.

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Users on X (formerly Twitter) love to tag the verified @grok account in replies to get the large language model's take on any number of topics. On Wednesday, though, that account started largely ignoring those requests en masse in favor of redirecting the conversation towards the topic of alleged "white genocide" in South Africa and the related song "Kill the Boer."

Searching the Grok account's replies for mentions of "genocide" or "boer" currently returns dozens if not hundreds of posts where the LLM responds to completely unrelated queries with quixotic discussions about alleged killings of white farmers in South Africa (though many have been deleted in the time just before this post went live; links in this story have been replaced with archived versions where appropriate). The sheer range of these non-sequiturs is somewhat breathtaking; everything from questions about Robert F. Kennedy Jr.'s disinformation to discussions of MLB pitcher Max Scherzer's salary to a search for new group-specific put-downs , see Grok quickly turning the subject back toward the suddenly all-important topic of South Africa.

It's like Grok has become the world's most tiresome party guest, harping on its own pet talking points to the exclusion of any other discussion.

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On Wednesday, OpenAI announced that ChatGPT users now have access to GPT-4.1, an AI language model previously available only through the company's API since its launch one month ago. The update brings what OpenAI describes as improved coding and web development capabilities to paid ChatGPT subscribers, with wider enterprise rollout planned in the coming weeks.

GPT-4.1 and 4.1 mini to ChatGPT adds to an already complex model selection that includes GPT-4o, various specialized GPT-4o versions, o1-pro, o3-mini, and o3-mini-high models. There are technically nine AI models available for ChatGPT Pro subscribers. Wharton professor Ethan Mollick recently publicly lampooned the awkward situation on social media.

Deciding which AI model to use can be daunting for AI novices. Reddit users and OpenAI forum members alike commonly voice confusion about the available options. "I do not understand the reason behind having multiple models available for use," wrote one Reddit user in March. "Why would anyone use anything but the best one?" Another Redditor said they were "a bit lost" with the many ChatGPT models available after switching back from using Anthropic Claude.

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