this post was submitted on 16 May 2024
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xkcd

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==COSMOLOGY==> 'Uhhh ... how sure are we that everything is made of these?'

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[–] ForgotAboutDre@lemmy.world 1 points 1 year ago (7 children)

It’s not crazy when you think they are both trying to model the same universe.

[–] Liz@midwest.social 7 points 1 year ago (5 children)

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.

[–] ForgotAboutDre@lemmy.world 3 points 1 year ago (2 children)

They are both describing the same particles.

[–] Sentau@discuss.tchncs.de 0 points 1 year ago* (last edited 1 year 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

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