Robert Waldmann writes:
Zombie Economics: Just from the first two words of the title "Zombie Economics:" I assumed the book was about reanimation of refuted hypotheses. I'd say the point is not that economists have come up with a lot of false hypotheses. That's normal and just the way hypotheses are. The point is that the status of those so-called hypotheses is not reduced by empirical evidence.
As noted by Quiggin, one problem is that they aren't hypotheses at all but rather statements so vague that they can't be tested. The other problem is that many economists draw policy implications of statements so vague that they can't be tested.