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& stuff in full description below ↓↓↓ A little extra bit from this interview: https://youtu.be/R1YWefm-o6c This video features Hannah Fry. Her new book "Hello World" is out soon. Hannamation in this video by Pete McPartlan. More Hannah on Numberphile: http://bit.ly/hannah_vids Some extra out-take video from Hannah's stint behind the camera is available to Patrons!!! https://www.patreon.com/posts/19022716 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. https://www.simonsfoundation.org/outreach/science-sandbox/ And support from Math For America - https://www.mathforamerica.org/ 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 Numberphile T-Shirts: https://teespring.com/stores/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