When I was on the high school debate team, my partner and I were by far the most succesful team from our school during our junior and senior years. We may not have been the smartest people on our team, but we were the best debaters. The reason for this is simple: we could communicate our ideas and arguments more persuasively than our peers on the team. The lesson we learned was a simple one: while you want to be smart and knowledgeable, you also have to be able to communicate those ideas persuasively if you want to be effective. Unfortunately, Timothy Geithner didn't learn that lesson until recently.