THE OTHER DAY I MENTIONED JOHN GARTNER’S NEW BOOK, The Hypomanic Edge: The Link Between (a little) Craziness and (a lot of) Success in America. Now Daniel Gross has a review in Slate, concluding: “Gartner is right that hypomanic first movers matter a lot, and that we need a few more. But we shouldn’t forget the huge contributions of the more sober-minded folks who follow behind and pick up the pieces.”