The authors thank Colin Camerer, John Clithero, Cary Frydman, Lawrence Jin, Shijie Lu, Rosemarie Nagel, Whitney Newey, Ram Rao, David Reiley, Xiaoxia Shi, Jakub Steiner, Colin Stewart, Tomasz Strzalecki, Pengfei Sui, and Raluca Ursu as well as seminar attendees at Berkeley (Haas), Caltech, Chinese University (Hong Kong), Duke (Fuqua), Hong Kong University of Science and Technology, Hong Kong Baptist University, Ohio State, Princeton, Toronto (Rotman), the 2020 Korean Economic Review International Conference, the 2019 Economic Science Association (Los Angeles), the 2019 Workshop on the Economics of Advertising and Marketing (Porto), the 2019 Conference on Structural Dynamic Models (Chicago), and the 2018 California Econometrics Conference (Irvine) for helpful comments.