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

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

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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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