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 CMB  

HI. I've appreciated your responses on this topic, but these   have been difficult for me to understand. I'm thinking that perhaps my confusion stems from argument(s) I've heard that ""physics is local"" which might mean limiting inertial reference frames to specific and very localized lattices? I ask because I do think of these frames as extending uniformly to infinity, and I cannot think of a proper reference frame lattice varying over distances in any significant way. Another possible source of confusion (I don't know if this is the case, but as I said I'm at a lost to understand your reply) is perhaps you are thinking Hubble's law isn't uniform when AFAIK is supposed to involve a spatially uniform expansion (observers in different parts of the observable universe should be currently observing basically the same distant red shifts and law).     "