We have a special guest this week: Brady Haran, creator of the YouTube channel Numberphile! We welcome Brady to the cave and talk about the origin of Numberphile--along with Brady's other channels--his video making process, and some of his favorite Numerphile episodes.

Watch Numberphile episodes here:    / numberphile  

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Still Untitled is Adam Savage, Will Smith, and Norman Chan

Intro bumper by Abe Dieckman

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