Fred Thompson Quits. Why Now?

We all know that former senator/sometime actor Republican Fred Thompson dropped out of the Presidential race on Tuesday. The question is, “Why then?” Why not on Monday? Why not last week? Or last month? What drives a person to be a candidate when everyone in the world knows he or she has no chance? And what finally convinces that candidate that the rest of the world has been right all along? All this gets to an even more basic question which is, “Why do people who can