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Why is Space a THREE DIMENSIONAL ENTITY?

I know that In physics and mathematics, the dimension of a mathematical space is informally defined as the minimum number of coordinates needed to specify any point within it

I'm a student and I have tried to find the answer to this question but I probably didn't get any answer that I understand...

So pls help me with this as I'm still a beginner here!

P.S : There's a similar question at Is 3+1 spacetime as privileged as is claimed?

but I kinda didn't get my answer there if there's anyone who can explain in a simpler manner request you to

Qmechanic
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SPm
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  • Possible duplicates: https://physics.stackexchange.com/q/45495, https://physics.stackexchange.com/q/10651 – Nihar Karve Feb 23 '21 at 05:13
  • Actually, I didn't get the answer right there, it just went above my head! – SPm Feb 23 '21 at 05:15
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    It is an experimental fact. In Physics we use experimental (input) data in our models. In particular, in Geometry, the space dimensions is 3. – Vladimir Kalitvianski Feb 23 '21 at 05:43
  • So anytime can we have more dimensions coming up?(in general space) – SPm Feb 23 '21 at 05:49
  • Why 3 dimensions? In large part, because that is all you can perceive. Various theories have space a 7, 11, even 21-dimensional. Are the other dimensions actually curled up into themselves, or do we just perceive it as such from our limited 3(+1)D viewpoint? These questions are hard to answer, and even harder to prove. – PcMan Feb 23 '21 at 07:33

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