The contact hypothesis is a psychological theory that says the more you interact with a certain group of people, the more you come to accept, understand, and to respect them. For example, if a homophobe spent any meaningful time around gay people, they will eventually grow out of their homophobia. In this week's Mini Philosophy interview, Kwame Anthony Appiah argues that this is why cosmopolitanism will not go away. Appiah argues that people want, people need, to be kind to each other, no matter