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:
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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.

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