Grant Sanderson from 3Blue1Brown joins us to discuss an intriguing puzzle with a shrinking bullseye. More links & stuff in full description below ↓↓↓ 3Blue1Brown: www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw Grant Sanderson on the Numberphile podcast: youtu.be/A0RH93XvSyU Greg Egan's tweet which started it all: twitter.com/gregegansf/status/1160461092973211648 Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. www.simonsfoundation.org/outreach/science-sandbox/ And support from Math For America - www.mathforamerica.org/ NUMBERPHILE Website: www.numberphile.com/ Numberphile on Facebook: www.facebook.com/numberphile Numberphile tweets: twitter.com/numberphile Subscribe: bit.ly/Numberphile_Sub Videos by Brady Haran Grant did the animations for this one! Patreon: www.patreon.com/numberphile Numberphile T-Shirts: teespring.com/stores/numberphile Brady's videos subreddit: www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: www.bradyharanblog.com/ Sign up for (occasional) emails: eepurl.com/YdjL9