https://xkcd.com/2933

Alt text:

==COSMOLOGY==> ‘Uhhh … how sure are we that everything is made of these?’

  • Liz
    link
    fedilink
    English
    arrow-up
    9
    arrow-down
    2
    ·
    7 months ago

    When you section off a small part of the universe and try to model it, there’s little reason your model should look like a model for a completely different small part of the universe. Not unless they share fundamental characteristics that you’re trying to model. The math that describes permanent deformation looks nothing like fluid dynamics.

      • Liz
        link
        fedilink
        English
        arrow-up
        1
        ·
        7 months ago

        I mean in the case of the comic, yeah the reason for the behavior actually is tied to pretty much the same principles, but the generalized statement you made isn’t, well, generalizable.

      • Sentau@discuss.tchncs.de
        link
        fedilink
        English
        arrow-up
        1
        arrow-down
        1
        ·
        edit-2
        7 months ago

        They are both describing the same particles.

        Water and ice are made up the same particles and molecules yet the mathematical structure to define the effect of force/pressure is very different - plastic deformation vs fluid dynamics as the example given above