It may only be rock and roll, but Alan Krueger, the outgoing chairman of the President’s Council of Economic Advisors, likes it, not least because it is economically illuminating. Among the ways in which the economy and the recording industry are alike, he said in a recent address at the Rock and Roll Hall of Fame in Cleveland, is that outcomes in both depend substantially on luck. The suggestion is that distributions dictated by chance are arbitrary, problematic and—this last point is unstated but seemingly latent—fair game for rearranging. The typical conservative response is to deny that luck rather than merit is at play. But were the point ceded just for fun—and luck stipulated as a potent force in economic affairs—an interesting question might result: So?