How to solve the prisoner hat riddle (and save yourself from alien invasion) [video]
Posted by staff / October 8, 2015
The aliens have arrived and have a test that requires concentration and smarts to save humanity.
Before you throw up your hands and start praying to your deity of choice with a vengeance, discover how to solve the prisoner hat riddle with help from Alex Gendler in this animated TED-Ed talk.
Full story at TED-Ed via Laughing Squid.
Graphics credit: Canva
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