Bill Gates is an American entrepreneur, software developer, investor, and philanthropist. Bill chats with the Armchair Expert about being fascinated by advancements in history, balancing work/marriage/fatherhood and his eternal optimism. Dax wonders if it's possible to be simultaneously sweet and demanding and Bill talks about his love of the movie, Spy Game. The two talk about the critical role of vaccinations, whether tech entrepreneurs deserve to be questioned by the government and their mutual love of Diet Coke.