Donald Knuth coined the term "Surreal Numbers" and wrote the first book about them after lunch with the man who devised them, John Conway. More links & stuff in full description below ↓↓↓ More from this interview: https://www.youtube.com/watch?v=gMuS8ckbdZE John Conway interviews: http://bit.ly/ConwayNumberphile Surreal Numbers AMAZON BOOK LINK: http://bit.ly/KnuthSurreal John Conway AMAZON BOOK LNK: http://bit.ly/GeniusAtPlayUS Surreal Number graphic by Lukas Lanky Knuth Dragon Curve: https://www.youtube.com/watch?v=v678Em6qyzk Support us on Patreon: http://www.patreon.com/numberphile 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 Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile Videos by Brady Haran 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 Numberphile T-Shirts: null Other merchandise: https://store.dftba.com/collections/numberphile