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That said, the results also show the limits of working with current AI models, largely because, unlike a human, they can’t really explain the process by which they’re making decisions. For example, some of the models made very different suggestions from each other, which the researchers say implies that they are exploring different regions of the space of possible sequences. But we don’t actually know whether that’s the case, or if each model had mathematical reasons for disliking the other’s suggestions. That’s one of a number of cases in the paper where the researchers tried to reason backward about what…

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Jury leaves for the day, judge meets with lawyersElon Musk is questioned by Russell Cohen, a lawyer for Microsoft, during Musk’s lawsuit over OpenAI for-profit conversion at a federal courthouse in Oakland, California, U.S., April 30, 2026 in a courtroom sketch. Vicki Behringer | ReutersJudge Gonzalez Rogers is letting the jury go a few minutes early so that she can confer with the lawyers about an objection. There are no proceedings tomorrow, so the next time the jury will be back in court is on Monday morning. Gonzalez Rogers gave the jurors strict instructions not to speak about the case or…

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Jakub Porzycki | Nurphoto | Getty ImagesThe tech-heavy Nasdaq Composite climbed 15.29% in April, its biggest monthly gain since the start of the Covid pandemic in April 2020. Earnings for big tech this week have boosted the sector, with Alphabet, Amazon and Microsoft all beating expectations for revenue and cloud growth.Alphabet surged 10% after earnings, climbing 34% this month. It’s the company’s best month since October 2004, the year it went public.Meta fell 9% Thursday after announcing an increase in its capex spend, but still gained nearly 7% for the month.Shares of Amazon rose 27% in April, while Broadcom gained…

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U.S. President Donald Trump holds an executive order signing in the Oval Office of the White House on April 30, 2026 in Washington, DC. Andrew Harnik | Getty ImagesPresident Donald Trump on Thursday said he does not worry about another attempt on his life on the heels of what prosecutors say was a third assassination effort against him by a gunman at the White House Correspondents’ Association dinner on April 24.”I don’t think about it,” Trump told a reporter when asked at the White House if he was concerned about another assassination attempt.”If I did, I wouldn’t be he,” the…

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A potential pullback by Middle East sovereign wealth funds could drain hundreds of billions of dollars from the artificial intelligence boom and threaten key data center projects, according to tech investor Jack Selby.Middle East investors — including sovereign wealth funds and government entities — account for roughly a quarter of global investments committed to AI over the next five years, said Selby, managing director of Peter Thiel’s family office, Thiel Capital. If the war in Iran drags on, and the United Arab Emirates, Saudi Arabia and other countries divert their investments to rebuilding at home, the lost capital could ripple…

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Since the introduction of wings to racing cars halfway through the 1960s, airflow has been everything in racing. Until that point, the focus was on making a car as slippery as possible; less drag meant more top speed on the straights. Then designers like Jim Hall at Chaparral and Colin Chapman at Lotus realized they could use the air to push the car onto the track, increasing grip and allowing it to go faster through the corners. Things haven’t been the same since. Finding aerodynamic downforce started as something of a dark art. The use of wind tunnels to simulate…

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