New York Times bestselling author and tech writer Leander Kahney joins the show. His new book is TIM COOK: The Genius Who Took Apple to the Next Level. Kahney writes the first-ever biography of Tim Cook and tells the inspiring story of how one man attempted to replace someone irreplaceable. Based on interviews with Cook’s colleagues, Kahney chronicles the success of post-Jobs Apple including how Cook led the company to its historic trillion-dollar valuation.