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I have produced evidence that the universe is a scaled 4-sphere with radius $1/h$.  The usual procedure for producing ‘semiclassical’ limits of quantum mechanical systems is done by considering the crucial parameter to be $h$ and then letting it go to zero.  Now it is clear in the S4 picture that such a procedure flattens the sphere forcing the curvature to zero.  So from my point of view what the usual ‘semiclassical’ limit is doing is assuming that the special features of quantum mechanics are due to this parameter and one should recover classical physics in the limit.  Not that this has not produced such results, but in my mind there is no fundamental reason that classical physics would not be valid on a scaled 4-sphere.