A.I. to take over world — or not: Whom to believe?
Stephen Hawking, world-renowned theoretical physicist, mathematician, cosmologist and author, may have died in March, but the warnings of his final book, “Brief Answers to the Big Questions,” published just this week, shout from beyond the grave as something like this: Watch out, humanity, artificially intelligent beings will soon rule. And ‘lest you laugh — Hawking...