Science and Technology

John Walker, a groundbreaking, if reclusive, technology entrepreneur and polymath who was a founder and chief executive of Autodesk, the company that brought the ubiquitous AutoCAD software program to the design and architecture masses, died on Feb. 2 in Neuchâtel, Switzerland. He was 74.His death, in a hospital, was caused by complications of head injuries he suffered in a fall at home, his wife, Roxie Walker, said. His death was not widely reported at the time.Mr. Walker was well known in tech circles, not just for his triumphs in business but also for his outsize skills as a programmer —…

Bitcoin hit a record high of about $68,800 on Tuesday, capping a remarkable comeback for the volatile cryptocurrency after its value plunged in 2022 amid a market meltdown.Bitcoin’s price has risen more than 300 percent since November 2022, a resurgence that few predicted when the price dropped below $20,000 in 2022. Its previous record was just under $68,790 in November 2021, as crypto markets boomed and amateur investors poured savings into experimental digital coins.“This is just the beginning of this bull market,” said Nathan McCauley, the chief executive of the crypto company Anchorage Digital. “The best is yet to come.”Bitcoin’s…

Since introducing the App Store in 2008, Apple has run it largely the same way across 175 countries, right down to the 30 percent commission it has collected on every app sold.The company calls the result an economic miracle. The store has generated more than $1 trillion in sales, helped create more than seven million jobs and delivered Apple billions of dollars in annual profits.But as the App Store approaches its 16th anniversary, a patchwork of local rules are upending Apple’s authority over it.On Thursday, European Union regulators will begin enforcing the Digital Markets Act, a 2022 law that requires…

When Elon Musk sued OpenAI and its chief executive, Sam Altman, for breach of contract on Thursday, he turned claims by the start-up’s closest partner, Microsoft, into a weapon.He repeatedly cited a contentious but highly influential paper written by researchers and top executives at Microsoft about the power of GPT-4, the breakthrough artificial intelligence system OpenAI released last March.In the “Sparks of A.G.I.” paper, Microsoft’s research lab said that — though it didn’t understand how — GPT-4 had shown “sparks” of “artificial general intelligence,” or A.G.I., a machine that can do everything the human brain can do.It was a bold…