Were I in a room with only Greenspan and myself, and I had to choose which of us should head the Fed, I'd choose Greenspan, of course, despite my knowledge, after the fact, that he made egregious errors while Chairman. No one is perfect, and some will do better than others. Legitimate differences of opinion and criticism of policy is fair and useful. But to talk of persons far more qualified then ourselves in the derogatory terms we encounter in these forums, as though they were goofuses running around with their zippers open, does more than reflect badly on those hurling the insults, it completely destroys their credibility. Likewise, it is foolhardy for us who point out errors made, to assume, therefore, that we know more than they. We don't.