I once read that no matter where we are in the universe, we are at the center of the universe. If that is true, then everyone in every part of the universe has a different "most distant". There seems to be a fallacy somewhere here. Perhaps in what shape we are giving the universe?
My understanding is the same (each vantage point) is entitled to lay claim for, "center of the universe". Detection distance ability is governed by technology. At any given point in time (technology time) distance is a static or fixed amount. Rotating around, in every possible distance, establishes your observation sphere. Outside of that sphere is an unbound universe (debatable by some, I believe it though). Two different vantage point spheres may or may not overlap (if close, likely overlap)...it will never be edge to edge though...or concentric. Both will have some unique observation edges.
As to a fallacy? I am not sure I quite understand. I will have to back read everything a few more times.
Edit: I think I get it. I understand it to mean if you and I are inline with a common observation direction, whoever is in front (between the rear person and the observation direction) will indeed see an earlier universe. You will receive photons before the person behind. Thus, you seen an earlier universe first.
My take on it anyway.
Edited by Kardashev6, 07 October 2019 - 07:53 PM.