Perverse Reputational Incentives In Central Banking: I was reading recently in Hjalmar Schacht's biography Confessions of the Old Wizard (thanks to Brad DeLong for getting me a copy) and part of what's so incredible about it are that Schacht's two great achievements—the Weimar-era whipping of hyperinflation and the Nazi-era whipping of deflation—were both so easy. The both involved, in essence, simply deciding that the central bank actually wanted to solve the problem….
To halt the inflation, the Reichsbank would have to stop printing money. But once the inflation had gotten too high for Reichsbank President Rudolf Havenstein to stop printing money and stop the inflation would be an implicit admission that the whole thing had been his fault in the first place and he should have done it earlier…. So things continued for several years until a new government brought Schacht on as a sort of currency czar. Schacht stopped the private issuance of money, launched a new land-backed currency and simply… refused to print too much of it. The problem was solved both very quickly and very easily….
The institutional and psychological problem here turns out to be really severe. If the Federal Reserve Open Market Committee were to take strong action at its next meeting and put the United States on a path to rapid catch-up growth, all that would do is serve to vindicate the position of the Fed's critics that it's been screwing up for years now. Rather than looking like geniuses for solving the problem, they would look like idiots for having let it fester so long. By contrast, if you were to appoint an entirely new team then their reputational incentives would point in the direction of fixing the problem as soon as possible.