Favorites Playlist

Favorites Playlist

03:31

Key Facts In This Video

  • 1

    The design of your five-fingered hand dates back 340 million years. (0:17)

  • 2

    An extra digit on your hand would not be very helpful. (1:30)

  • 3

    Humans have a power grip that other primates lack. (2:07)

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from MindYourDecisions

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