Tricky Spool Riddle SOLUTION - ft Anne Wojcicki

How did you answer the spool riddle? Try SquareSpacepace at http://squarespace.com/physicsgirl Special guest Anne Wojcicki, entrepreneur, biologist and CEO of 23andMe, joins Physics Girl for the answer(s?!) to the spool riddle and for a genetics riddle! First Video: https://youtu.be/BnxG0RqP080 If you liked this video check out these: Can YOU solve the magnet riddle? ft YouTube CEO Susan Wojcicki https://www.youtube.com/watch?v=oq6HFcFS2IE&list=PLGO_AWB1C4GTLljYFhX2XUYzKQtMocI_K&index=15 WHICH TANK FILLS FIRST? ft. Simone Giertz https://www.youtube.com/watch?v=oxbuFwW5f-Q&list=PLGO_AWB1C4GTLljYFhX2XUYzKQtMocI_K&index=11 Creator: Dianna Cowern Editor: Jabril Ashe Animator: Kyle Norby Thanks to: Anne Wojcicki, the 23andMe staff and Dan Walsh I first heard this riddle from Derek Muller of Veritasium during a talk he gave. It stuck with me as a fun hands-on riddle to ask in person. Plus he gave me his blessing to use it in a video. He hates riddles anyways. ••••••••••••••••••••••••••••••••••••••••­­­••••••••••• Keep up with my less sciencey shenanigans: INSTAGRAM: http://instagram.com/thephysicsgirl TWITTER: http://twitter.com/thephysicsgirl FACEBOOK: http://facebook.com/thephysicsgirl