Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi Can you turn your pants inside out without taking your feet off the ground? Start your free trial with Squarespace at http://squarespace.com/infiniteseries and enter offer code “infinite” to get 10% off your first purchase. And check out Vanessa Hill’s documentary Mutant Menu right here! https://www.youtube.com/watch?v=NrDM6Ic2xMM And special thanks to Danny Haymond Jr aka @slothman86 for for his incredible fan art! Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode Building an Infinite Bridge https://www.youtube.com/watch?v=1_DOzuaBE84 The Heart of Mathematics https://www.amazon.com/Heart-Mathematics-invitation-effective-thinking/dp/1931914419 Picture Hanging Article:: https://arxiv.org/pdf/1203.3602.pdf Written and Hosted by Kelsey Houston-Edwards Produced by Rusty Ward Graphics by Ray Lux Made by Kornhaber Brown (www.kornhaberbrown.com) Find out why Topology is often called Rubber Sheet Geometry and try to solve these counter-intuitive topological puzzles. Challenge Winners: Alan Chang @Chalkface Comments answered by Kelsey: Louis JX https://www.youtube.com/watch?v=1_DOzuaBE84 Erdmannelchen https://www.youtube.com/watch?v=1_DOzuaBE84