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I can't find a proper explanation anywhere on the site and the entire concept sounds completely self contradictory.
To my understanding a 4 dimensional space is uncountably infinitely bigger than a 3 dimensional space, making the difference between a finite and an infinite higher dimensional space infinitesimal. In other words the difference between a finite 4D space and a 3D universe is basically the same as between an infinite 4D space and a 3D universe.
Even if you want to say that infinite 4D is obviously above finite 4D, finite 4D should still be uncountably infinitely above infinite 3D. The FAQ says
So my question is what exactly is an "insignificant higher dimension" and what's the logic behind it? Also how does it affect scaling and how does a dimension qualify as significant or insignificant?
To my understanding a 4 dimensional space is uncountably infinitely bigger than a 3 dimensional space, making the difference between a finite and an infinite higher dimensional space infinitesimal. In other words the difference between a finite 4D space and a 3D universe is basically the same as between an infinite 4D space and a 3D universe.
Even if you want to say that infinite 4D is obviously above finite 4D, finite 4D should still be uncountably infinitely above infinite 3D. The FAQ says
So my question is what exactly is an "insignificant higher dimension" and what's the logic behind it? Also how does it affect scaling and how does a dimension qualify as significant or insignificant?