Stephen tells Steven Pinker that he doesn't fear evolution because he doesn't believe in it and that he has the kind of brain damage that prevents him from swearing. (6:38)
Nassim Nicholas Taleb's book, "The Black Swan," is about the power of randomness. Coincidentally, he was also the winner of Stephen's Pull a Guest Out of a Hat Sweepstakes. (5:56)
According to Jonathan Cohn, the health care crisis forces even middle class Americans, who play by the rules, to choose between bankruptcy and medical care. (06:11)