Greenspan Gives Himself a C -

"When you've been in government for 21 years, as I have been, the issue of retrospect and what you should have done is a really futile activity," Greenspan said. "I was right 70% of the time. But I was wrong 30% of the time, and there were an awful lot of mistakes in 21 years," he added.

Fair enough. But you don't get far with those kinds of grades in the 'real world'; C- = F in grad school, for one thing.