Our Pi Playlist (more videos): http://bit.ly/PiPlaylist The State of Indiana nearly passed a law which would have made Pi equal 3.2 - strange but true. More links & stuff in full description below ↓↓↓ This video features Dr James Grime - https://twitter.com/jamesgrime The video about squaring circles: https://www.youtube.com/watch?v=CMP9a2J4Bqw A note to potentially disgruntled viewers about making this video longer to include the subsequent lengthy discussion about squaring circles: http://periodicvideos.blogspot.co.uk/2013/03/continue.html 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 Numberphile T-Shirts: null Other merchandise: https://store.dftba.com/collections/numberphile