A few days after a lawyer used ChatGPT to write a brief filled with made-up cases, a group of A.I. experts released a letter warning of the “risk of extinction” from the technology. But will A.I. ever be good enough to pose such a threat? Then, FAANG is now MAAAN, with the addition of Nvidia....

The U.S. surgeon general, Dr. Vivek Murthy, says social media poses a “profound risk of harm” to young people. Why do some in the tech industry disagree? Then, Ajeya Cotra, an A.I. researcher, on how A.I. could lead to a doomsday scenario. Plus: Pass the hat. Kevin and Casey play a game they...

In a congressional hearing this week, OpenAI’s chief executive, Sam Altman, appeared to be on the same page as lawmakers: It’s time to regulate A.I. But like so many other proposals to regulate tech, will it actually happen? The Times’s technology reporter Cecilia Kang helps us understand whether...