Journalist and bestselling author Brad Stone joins David Baddiel in the Penguin studio to talk about his new book, The Upstarts: How Uber, Airbnb and the Killer Companies of the New Silicon Valley are Changing the World. Brad brings along objects including a copy of Hokusai’s The Great Wave and a photograph of Airbnb founder Brian Chesky in a bodybuilding competition as he explains how companies like Uber and Airbnb have rewritten the traditional rules of business, and changed the way we live our lives. #PenguinPodcast