News for hackers. Stuff that matters.

A comment on The anus is an evolutionary marvel.

Re:The anus is an evolutionary marvel by varyherb on Thursday May 20, 2021 @11:54PM (#27230323)
When I think about the digestive tract, I wonder—is the human body topologically equivalent to a torus?
[ Parent | on HN ]
Re:The anus is an evolutionary marvel by dsamarin on Friday May 21, 2021 @03:39AM (#27231453)
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.

https://youtu.be/egEraZP9yXQ

[ Parent | on HN ]
Re:The anus is an evolutionary marvel by oh_sigh on Friday May 21, 2021 @01:11AM (#27230722)
Specifically a g-holed torus, since the digestive tract isn't the only hole through the human body. At the very least, the mouth and ear are connected forming another hole.
[ Parent | on HN ]