Greenspan is hardly insane. I have said a number of times here that the Greenspan Gambit is the only possible solution that could prevent serious recession and potential deflation. It is a very rational move for him, indeed the only move that could negate his mismanagement of the Fed to date - if only for a while. Of course that is the problem, even if it works, it will only set up new distortions in the economy that are worse than before.