WE KEEP HEARING THAT JOBS ARE LESS SAFE, AND LESS STABLE THAN IN THE PAST, but that doesn’t seem to be the case: “The story about inequality is indisputably true. But we’re starting to learn that the second story, the one about instability, is more complicated. It may even end up being wrong. . . . Volatility may or may not have increased over the last generation, but it does not appear to have changed in a fundamental way.”