Will increasingly advanced machines replace us? Biographer Walter Isaacson showcases some great thinkers on computers and intelligence, from Ada Lovelace to Alan Turing. Plus, what's our current approach to intelligent machines? Find out, in this lecture from Smithsonian Magazine's The Future Is Here Festival. About the Speaker: Walter Isaacson is the President and CEO of the Aspen Institute. He is the author of several books, including The Innovators and Steve Jobs.