Stephen J. Dubner hosts an episode full of the world's most renowned behavior change experts, including Colin Camerer, Ayelet Fishbach, David Laibson, Max Bazerman, Katy Milkman, and Kevin Volpp. Angela Duckworth (psychologist and author of Grit) is our special guest co-host, with Mike Maughan (head of global insights at Qualtrics) as real-time fact-checker.