Lecture 4: Rationalizability

MIT 14.12 Economic Applications of Game Theory, Fall 2025 Instructor: Ian Ball View the complete course: https://ocw.mit.edu/courses/14-12-economic-applications-of-game-theory-fall-2025/ YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP63quuKvMHCt3cmTmt0O2qpv In this lecture, Ian Ball explains rationalizability, which is a concept defining the set of strategies that rational players might choose, assuming common knowledge of rationality. License: Creative Commons BY-NC-SA More information at https://ocw.mit.edu/terms More courses at https://ocw.mit.edu Support OCW at http://ow.ly/a1If50zVRlQ We encourage constructive comments and discussion on OCW’s YouTube and other social media channels. Personal attacks, hate speech, trolling, and inappropriate comments are not allowed and may be removed. More details at https://ocw.mit.edu/comments.