On 2/5/2014 9:31 AM, Jesse Mazer wrote:
--question 1 dealt with the question of how YOU would define p-time simultaneity in a cosmological model where there's no way to slice the 4D spacetime into a series of 3D surfaces such that the density of matter is perfectly uniform on each slice (and that uniform can be characterized by the parameter Omega), unlike in the simple FLRW model where matter is assumed to be distributed in this perfectly uniform way.
I don't see that perfect uniformity is necessary. We have calculated our epoch relative to the CMB as 13.8By. I assume any other scientific species in the universe could do the same and so say whether they were 'at the same time' as measured by expansion of the cosmos. I don't see how the existence of galaxies and galaxy clusters precludes this kind of measurement.
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