In this episode, Xavier Bonilla has a dialogue with Allen Buchanan about the origins of tribalism and morality. They discuss his reasons for writing about tribalism and ideology along with providing a definition of tribalism and how it manifests in society. Allen provides his critiques of the evolutionary models for morality and how he finds cooperation incomplete. They discuss the current evolutionary and psychological theories about cooperation and how they interact with his criticisms. They discuss the impact of culture and his pragmatic answers to tribalism and poor ideology and many other topics. Allen Buchanan is a philosopher and was the James B Duke Professor of Philosophy at Duke University. He was also a professor of Philosophy of International Law at the Dickson Poon School of Law at King's College, London. Currently, he teaches and conducts research at the University of Arizona. He is the author of numerous books, including his most recent, Our Moral Fate: Evolution and the Escape From Tribalism. Find him here.