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Can we consider a few other possibilities?

As in, taking the point of view of cosmology about 100 years ago, before the redshift was attributed to the Doppler effect. And before the notion of a big bang was the default basis of reasoning.

- What if H is just a measure of redshift? Literally just redshift. Not expansion. Not an age. Just photons losing energy. At a rate of H.

- What if H actually is constant? Like G and like h and like k (Coulomb's constant).

- What if the universe doesn't have an age?

^ not rhetorical questions. Actually asking.

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