Dec. 1—A talk with Mark Galassi, even if it spans a few minutes, is likely to be a sweeping conversation, one that soars way out into the galaxy and plunges deep down into the human psyche. It's a ...

Artificial intelligence has become so good at chess that its only competition now comes from other computer programs. Indeed, a human hasn’t defeated a machine in a chess tournament in 15 years. It’s ...