How Many Holes Does a Human Have?
Vsauce3 HN recommenders · recommended in 3 months, 2021-2024
16.2M views · 6 years ago · explainer · evergreen
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.
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6 comments from Hacker News
Michael Stevens of VSauce fame has you covered with his "How Many Holes Does a Human Have?" video: ▶ this video
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
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
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
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
If you'd like a fun, light, video introduction to this topic, this Vsauce video is worth a watch: ▶ this video