Special Relativity and Etrnalism (AKA Rietdijk–Putnam 4-dness)
Firstly I am curious as to how familiar with this idea my fellow science-philes at RRS are. Have you read it, heard of it, thought about it or, perhaps, drawn a similar conclusion for yourself from thinking about Minkowski space-time as an analogue of the physical universe?
Secondly, I wonder, what, if anything, changes in the way you perceive the universe as an entity subject to the notion that the Big Bang is not "gone and done", per se, but simply at a relative distance away from your 4 dimensional position, ( ie it is 'there' as much as Jupiter is 'there' but along a separate axis ) as opposed to your perceptions strictly under the notion that it has been and is not (presentism).
Thirdly, whether your perception does or doesn't change, and especially if you take a possibilist (in which the past is ontologically like space but the future is not) rather than a presentist view, what do you think the manifest presence of the fabric of time between your now and the Big Bang is in tangible terms.
Now I'll put forward my answers to these questions, and I would appreciate, though you're perfectly welcome to simply discuss my answers with me, if you have some unique input related to answering the questions please share it.
So my first answer is I have read a bit on the Rietdijk–Putnam argument, I've done so because I believe similarly that space-time (from relativity) most definitely implies some form of eternalism is the accurate philosophy of time, based on my understanding of it.
Second, I note a slight difference in my perception of the universe as an entity under the assumption that it is continuous and contemporary in existence along a time axis. The "contemporaneousness" of the whole seems to portray it as a more coherent singular identity than does the opposing viewpoint.
Finally the "contemporaneousness" of the past is found manifest in the present as distant light reaching the eye of the observer, already. We already know this and it is a limitation binding what we are able to perceive inextricably to the position in space-time from which we perceive it. (ie we see the edge of the universe, now, only as it was when time began and we can not see what came after because it hasn't arrived yet. ) it seems to me this principle might hold extended as a basic truth. So to say that your position in space-time intersects a finite block of information travelling as light through the eternalistic universe. Thus the past and future manifests as information not travelling through your space-time at the point in which you are.
Over to you...
Theist badge qualifier : Gnostic/Philosophical Panentheist