Bo Seo is a two-time world champion debater, former coach of the Harvard College Debating Union, and the author of the book Good Arguments, How Debate Teaches Us to Listen and Be Heard. ALISON BEARD: So, to me, being a champion debater means that you won a lot of arguments, and a lot of people I think would like to learn how to do that. ALISON BEARD: That’s Bo Seo, two-time world champion debater and author of the book Good Arguments: How Debate Teaches Us to Listen and Be Heard.