Honestly, I am profoundly in disagreement with Krugman about everything, but that's because he's right about everything, but in wrong ways, usually due to a huge, huge, blind spot at the root. And it's frustrating that he can take people in with his analysis because it's easy to accept his arguments thinking "just hard enough" (which is catnip for lazy intellectuals).

Like for example with the Babysitter's coop. His analysis IS correct, but his remedy is presented as the absolute solution while being oblivious to the fact that the monetary system is based on a total fiction -- that hours are fungible, (e.g. one hour on christmas is equivalent to one hour on September 19, or even that on hour at midnight on a boring day is equilvalent to one hour at 7pm on a boring day). In general, all monetary and social systems are based on fictions, and they will eventually leak their bad abstractions. But I am not sure that Krugman would accept that iron statement.