Addendum: Someone asks whether the helicopter in the picture is a reference to the current chairman's somewhat pejorative nickname "Helicopter Ben." The answer is no, not at all. I used a helicopter in this interior illustration since the third edition, which predates Bernanke's becoming Fed chair. Ben has used the helicopter metaphor for monetary policy, but the metaphor is not original to him (or to me). I would guess it started with Milton Friedman, but I am not entirely sure.