I saw a video on higher dimensional geometry the other day and it said something at the end that gave me the following question: How do we know for sure that anything we perceive in our 3D world is actually only in 3D and not simply what we can perceive of higher dimensions?

[–] deo@lemmy.dbzer0.com 5 points 4 months ago (1 children)

We actually kinda do perceive a fourth dimension: time. Sure, we infer it from our memories and come up with cause and effect relationships to help us understand it. But we do know it's there.

[–] JackbyDev@programming.dev 7 points 4 months ago (1 children)

Okay, sure, but the question still remains, how do you know that there isn't some 5th dimension for some random objects.

[–] deo@lemmy.dbzer0.com 1 points 4 months ago

I think that's one of the theories for explaining dark matter (i personally like the idea because it can also possibly address why gravity seems to be so much weaker of a fundamental force, but i'm a chemist, not a physicist, so take that with a grain of salt).

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