Author Tim O'Reilly, founder of O'Reilly Media and long-time observer and commenter on the internet and technology, talks with EconTalk host Russ Roberts about his new book, WTF? What's the Future and Why It's Up to Us. O'Reilly surveys the evolution of the internet, the key companies that have prospered from it, and how the products of those companies have changed our lives. He then turns to the future and explains why he is an optimist and what can be done to make that optimism accurate.