 Tom is the smartest man I know. He's been a professor at two major universities, been a teacher for over 40 years. One day he told me that he was having problems in his classes. I think one of the students had asked the question and he didn't remember the answer. I also noticed that he was letting his class out earlier than they were supposed to let out. And he was telling them that he was doing it as a favor to them, but I think in reality he just wanted to get out of there.