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So how do we get distance and motion? If light refuse to 'move'? Heh, that one is weird, isn't it?
=Where is the frame of reference needed for defining a rotation?Relative what?(I stipulated 'no matter' just so that you wouldn't be able to use yourself as some 'static' proof of a three dimensionality. But the reasoning for rotations holds even if you would be there as matter)