Excellent article, Glenn. Good perspectives.

Also, Einstein's Spacetime is based on gravitational behavior of matter only. Einstein did not incorporate the non-gravitational behavior of matter. For one, he had not yet heard of the Big Bang model when he produced his relativity theories.

I support the Big Whisper model, which is a Big Bang model, though simpler than the Lambda-CDM model.

With the Big Bang, we have matter basically moving in a straight line away from the origin location. For instance, the Milky Way today, while indeed circling itself, is also continuing to move away from the specific spot of the Big Bang where its energy transformed into matter many years ago. Just to be complete, the energy of the Milky Way did not derive from the center of the Big Bang; rather it was from a specific location relatively far removed from the center.

Straight lines are of course never based on gravity. So, Einstein's Spacetime is not based on all behaviors of matter. It is based on a (large) subset of behaviors of matter moving through space.

Thanks for your article.