Comment on How about the digestive system?

• SpaceNoodle@lemmy.world ⁨1⁩ ⁨day⁩ ago

  But more importantly, calling any indentation a “hole” is a case of specifically ignoring the special significance of actual holes. You can’t pass through an indentation.

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  • 0ops@piefed.zip ⁨1⁩ ⁨day⁩ ago

    Guess I can’t dig holes either

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    • SpaceNoodle@lemmy.world ⁨1⁩ ⁨day⁩ ago

      Sure you can, they just gotta come out the other side. Otherwise it’s just a fancy divot

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      • sauerkrautsaul@lemmus.org ⁨1⁩ ⁨day⁩ ago

        ill put a fancy divot in yah dome wit my 9 millie brah

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  • Tlaloc_Temporal@lemmy.ca ⁨1⁩ ⁨day⁩ ago

    That’s why we have the compound word “through-hole”.

    90% of important parts on living things are pockets and manipulations of surface area, two things completely ignored by topology. Topology is interesting mathematically, and has meaning for traversal and knot problems, but it’s not really useful to describe reality.

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    • zeca@lemmy.ml ⁨10⁩ ⁨hours⁩ ago

      but it’s not really useful to describe reality.

      Skill issue

      really

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    • kogasa@programming.dev ⁨1⁩ ⁨day⁩ ago

      Topology is immensely useful to describe reality.

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    • myslsl@lemmy.world ⁨22⁩ ⁨hours⁩ ago

      but it’s not really useful to describe reality.

      This is just not true.

      What topology does for people practically, is it allows them to do a rough kind of geometric reasoning in a wide variety of cases. Further, the geometric notions defined via topology subsume many of the more intuitive notions you might already know of from the number line or the plane.

      For example, continuity of functions, convergence of sequences, interiors and boundaries of sets, connectedness and many other things are inherently topological notions that any person who has taken a typical calculus sequence should have some intuitive idea of.

      One of the biggest difference between actual pure topology and analysis is that analysis is just done in the context of really nice types of topological spaces called metric spaces in which notions of distance are available.

      Any time people are using results of calculus in the sciences, under the hood they are using details about topology on R^n.

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    • SpaceNoodle@lemmy.world ⁨1⁩ ⁨day⁩ ago

      That’s why we have a diverse set of words such as “divot,” “indentation,” “pit,” “well,” and so much more!

      Topology is a component of the language called “mathematics” we use to understand, describe, and model reality in concrete terms.

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  • aMockTie@piefed.world ⁨1⁩ ⁨day⁩ ago

    If you were to tell an average English speaker that you were going to dig an indentation, chances are high that they would misinterpret your meaning.

    On the other hand, if you told them that you were going to dig a “blind hole,” I imagine they would have a much better understanding of your meaning and you would still be technically correct.

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    • SpaceNoodle@lemmy.world ⁨1⁩ ⁨day⁩ ago

      That’s part of why I try not to talk to average English speakers

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      • aMockTie@piefed.world ⁨1⁩ ⁨day⁩ ago

        Haha fair enough

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