Chris Cox has long been the Chief Product Officer for Facebook. He has also recently been promoted to run product at WhatsApp, Messenger, and Instagram, which means he is effectively in charge of product for four of the six largest social media platforms in the world. He recently sat down with Wired Editor-in-Chief Nicholas Thompson at the Aspen Ideas Festival to talk about the responsibilities and plans of the platforms he helps run. Nicholas Thompson: I'm going to start with a broad question.