How Pi was nearly changed to 3.2

The State of Indiana nearly passed a law which would have made Pi equal 3.2 - strange but true.

More Pi videos from Numberphile: http://bit.ly/PiPlaylist

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