« on: Yesterday at 00:10:00 »
But some physicists are vague about whether the rapid variations in the current age of the distant person (according to the accelerating person) should be considered to be MEANINGFUL or not. It is possible to show that those rapid age variations (including negative ageing) MUST be considered to be fully real and meaningful.But you're the one being vague about it since you're not giving any definition of 'meaningful' here, except to put it in caps, which signifies it being shouted.
For instance, I can face Andromeda and say it is 2.5 MLY in front of me. Now I turn my back and it suddenly is 2.5 MLY behind me, 5 MLY from where it was a moment ago. Is that a MEANINGFUL change in location? I don't know your definition, so I can't answer, but that's all that's going on in the Andromeda scenario.
And while I have you on the horn, please stop copying your personal theories into the main sections of the forum. You have your own thread for that, and your own paper (full of mistakes) to which I left your link intact there.