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Drakkith

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what my point is, 3 dimensional analysis is not the only reality but there's something else beyond our 3 dimensional physics. also, as string theories rely on extra dimensions, it could mathematically reconcile general relativity and quantum physics...

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Drakkith

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okay, what about string theories then, string theorists say we live in a 3 dimensional membrane of the multidimensional space of universe.

Indeed but it is

what my point is, 3 dimensional analysis is not the only reality but there's something else beyond our 3 dimensional physics.

I'm not sure where you're getting this from. There are exactly zero mainstream, accepted theories used to model things in real life that have more than 3 spatial dimensions. There are certainly other theories out there with more than 3 spatial dimensions, but they are not accepted as of yet (mainly because we have yet to find a situation where they describe space better than GR).

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e.bar.goum

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Since this is a topic marked "Advanced", then you should be able to understand classical mechanics. Thus, this link will be of interest: http://usersguidetotheuniverse.com/index.php/2013/12/03/a-technical-post-on-more-than-3-dimensions/

Essentially, Bertrand's theorem: https://en.wikipedia.org/wiki/Bertrand's_theorem tells us that dimensionality >3 means that there are no closed orbits. Which I'll think you'd agree, is fairly essential us to be here.

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