Talking Killer Robots at Davos

Artificial intelligence already is a top topic at this year's World Economic Forum in Davos, Switzerland. Monday night, amid a driving blizzard that snarled traffic around town, I hosted a small dinner featuring Carnegie Mellon University's Justine Cassell. She is associate dean of technology, strategy, and impact at the university's school of computer science, and an expert on the human role in artificial intelligence. Cassell let loose the best one-liner I've heard that combats Elon Musk's fear that the robots will kill us all. "If you're afraid of the android revolution," she said, "just stand in a puddle.