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    How Many Holes Does a Human Have?

    Vsauce

    3 HN recommenders · recommended in 6 months, 2021–2024

    YouTube

    21:27 · 16M views · Feb 17, 2020

    Vsauce asks how many holes a human has and uses topology to show the answer depends on what counts as a hole, with animations and expert input.

    Pointed to as a fun, light introduction to topology and to answer the human-holes question.

    Mathematics & Theoretical CSPure mathematicsRecreational & visual math
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    6 comments from Hacker News

    1. @davkanFeb 2024· in “'Entropy bagels' and other complex structures emerge from simple rules”

      Vsauce has an interesting video regarding topology[0]. Probably a bit rudimentary for anyone already familiar with the math, but still entertaining in the typical vsauce way. [0] this video

      RecommendsView on HN
    2. @dsamarinMay 2021· in “The anus is an evolutionary marvel”

      It depends on the minimum size of the what you will consider a hole. Check out the video from VSauce on YouTube about how many holes a human has. this video

      RecommendsView on HN
    3. @thearrowJan 2021· in “Topology 101: How Mathematicians Study Holes”

      If you'd like a fun, light, video introduction to this topic, this Vsauce video is worth a watch: this video

      RecommendsView on HN
    4. @ravi-deliaNov 2021· in “The Math of Hunting Lions”

      This vsauce video is about humans, but I imagine pretty much every mammal will be just about topologically equivalent. As it turns out we humans have quite a few more holes than fleshy donuts would. this video

      CitesView on HN
    5. @karmakazeJan 2022· in “Let's Settle This”

      The Vsauce video in sibling comment at 12:59 shows an animation from the two-rings to the T-shaped pipe, or even a better animation at 15:59. 12:59 this video 15:59 this video

      CitesView on HN