• Hexagons [e/em/eir]
      hexbear
      10
      8 months ago

      I've thought about this a few times, but tbh I don't know enough about human anatomy to know! My main thing is, what about nostrils? Do nostrils increase the number of (topologically nontrivial) holes in a human? I think we can ignore the windpipe and lungs, there should be a homotopy removing them (I think). Same with eyeballs, vaginas, and whatnot. But nostrils? I think those might be topologically nontrivial.

      • Hexagons [e/em/eir]
        hexbear
        6
        8 months ago

        Oh! I forgot about ears! Really, the whole sinus situation is complicated and I have no idea what's happening in our weird-ass skulls

        • Adlach@lemmygrad.ml
          hexbear
          5
          edit-2
          8 months ago

          The outer ear ends at the eardrum, so I don't think it's topologically significant either. That said, the nostrils and mouth absolutely connect, so you have at least three holes up there.

          I think we have five topologically significant holes? Nostrils, mouth, anus, urethra. Nothing else is actually a hole.

            • Adlach@lemmygrad.ml
              hexbear
              4
              edit-2
              8 months ago

              Sorry, I should've said we have five significant orifices. You're right that mouth-anus is one hole.

          • GarbageShoot [he/him]
            hexbear
            1
            8 months ago

            How do eye sockets fit into this? Aren't there openings between the skull and outside, technically, even though intraocular muscles or whatever usually keep the eye in an airtight position in the socket?

            • Adlach@lemmygrad.ml
              hexbear
              2
              8 months ago

              Well, if we're saying that tissue blocking the way doesn't count, then we have a whooole lot of holes.

      • huf [he/him]
        hexbear
        5
        8 months ago

        https://www.youtube.com/watch?v=egEraZP9yXQ

      • CrimsonSage [any]
        hexbear
        2
        8 months ago

        Fun fact humans humans topologically look something like a menorah.