It had better be. According to a new study, trillionaires—once as preposterous as unicorns and Bigfoot—are just a few generations away from reality. We could have as many as 11 of them in just two generations, and Bill Gates is leading the way, largely expected to be the world’s first. That’s a doubly impressive feat for Mr. Gates, who continues to be one of the world’s most charitable people. Of course, all these predictions are contingent upon the apeocalypse, which could happen any day …