Franklin Foer, a national correspondent for The Atlantic and a fellow at the New America Foundation, joins us to discuss his book World Without Mind: The Existential Threat of Big Tech. Tracing computer science from Descartes to today's Silicon Valley, Foer shows how the corporate ambitions of Google, Facebook, Apple, and Amazon are trampling longstanding liberal values, especially intellectual property and privacy.

Franklin Foer will appear in conversation with his brother Jonathan Safran Foer at The 92nd Street Y (1395 Lexington Ave. at 91st St.) on Sept. 19 at 7:30 p.m.