T-Cow disagrees that Paul Krugman should be Fed Chairman:

Elsewhere I have to strongly differ with the Johnson-Kwak proposal that Paul Krugman be selected.  I don’t intend this as a negative comment on Krugman, if anything I am suggesting he is too dedicated to reading and writing and speaking his mind.  The Fed Chair has to be an expert on building consensus and at maintaining more credibility than Congress; even when the Fed screws up you can’t just dump this equilibrium in favor of Fed-bashing.  What lies on the other side of that curtain isn’t pretty.  Would Krugman gladly suffer the fools in Congress?  Johnson and Kwak are overrating the technocratic aspects of the job (which largely fall upon the Fed staff anyway) and underrating the public relations and balance of power aspects.  It’s unusual that an academic will be the best person for the job.

Even if you think that Krugman would be the best person for the job that doesn’t imply that we should give him the job.  The decision is between Krugman doing what he is doing now and Bernanke as Fed chairman versus Krugman being Fed chairman, nobody doing what Krugman is doing now and Bernanke going back to teaching Princeton undergrads.  To prefer the latter it is not enough that Krugman is a better Fed chair than Bernanke.  His advantage there must compensate for the other changes in the bundle.