David Autor took his first economics class at 29 years old. Now he’s one of the central academics studying the labor market. The M.I.T. economist and Steve dissect the impact of technology on labor, spar on A.I., and discuss why economists can sometimes be oblivious.

Kate Douglass is a world-class swimmer and data scientist who’s used mathematical modeling to help make her stroke more efficient. She and Steve talk about why the Olympics were underwhelming, how she won gold, and why she won’t be upset to say goodbye to the pool.