MAIN VIDEO: https://www.youtube.com/watch?v=O4ndIDcDSGc More links & stuff in full description below ↓↓↓ Extra footage part 1: https://www.youtube.com/watch?v=mccoBBf0VDM Professor Marcus du Sautoy is Simonyi Professor for the Public Understanding of Science and a Professor of Mathematics at the University of Oxford. Professor du Sautoy's book as mentioned... In the US it is called The Great Unknown - http://amzn.to/2sfkWpb In the UK it is called What We Cannot Know - http://amzn.to/2r5yztp More of his books: http://amzn.to/2ryEk4r Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Subscribe: http://bit.ly/Numberphile_Sub Videos by Brady Haran Patreon: http://www.patreon.com/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9