--(Etritonakin, Our spacetime began with the big bang -but there may be something similar to spacetime external to the big bang.)--
The problem is when you try to understand the limitless unknown based on the limited known which may not apply. It's only because the limit of what's known may not give you other choice. we can definitely understand that what is beyond our limits could be totally beyond our knowledge and totally different from any thing we experience in our physical world.
Our disparate trial to understand or encompass the limitless beyond our barriers in light of our knowledge is only a trial to impose limits on the limitless.
--(Etritonakin, A creator would have at least certainly modeled our spacetime in thought.
If we think of ourselves as within a cartoon or a program, then it may appear that everything began with the execution of that program.)--
Correct, every thing began with the execution of that program. Even the word before wouldn't apply to this point because it imply continuation of time further back beyond this point which is not true. Space/time and all physical limits started on this point. It limits/controls our physical world but has no relevance to the creator.
--(Etritonakin, However, that which now exists would be based on that which has always existed -) --
Correct but not accurate. That which now exists, came to existence because of that which has always existed.
--(Etritonakin, and is an arrangement of that which has always existed.)--
No, that would be again imposing limits on the limitless. You can not take the physical world further back in time/space beyond this point. All physical existence started at this point. That which now exists could be totally different from that which has always existed.
--(Etritonakin, We would not be able to say that our universe is the initial arrangement -only that we can see a point at which our universe was potentially arranged -and then began becoming arranged.)--
Correct, We can only see the beginning.
--(Etritonakin, It may seem that spacetime did not exist before the big bang upon because we imagine a point of no interaction and complete compression.
That seems to me to indicate a stored potential -which makes me wonder how that potential became stored.)--
Started not stored. We can't extend spacetime further back.
--(Etritonakin, Also... If the big bang is similar to the negative charge, what is the positive?)--
No clue. Maybe the collapse of the universe back to singularity after it stops expanding?
I disagree with a few points.
I do not see that what I wrote is imposing limits on the limitless -but acknowledging that the limitless has been given definition.
(The God of the bible is limitless, but even he imposes limits upon himself as part of the creative process.)
We may have an infinite amount of time in the future, for example, and marking years, months, days, hours, minutes, seconds, etc. is not imposing limits -but giving definition.
We can't say there is nothing beyond or greater than minutes just because we are only thinking about minutes.
Every physical thing began to form with the start of the program -out of what already existed.
That which already existed was given definition -designation, etc.
Our physical universe did not exist prior to the Big Bang -but everything that would become arranged as our universe did. Nothing physical existed, but the pre-physical did exist.
The physical is the pre-physical with different rules applied.
That which now exists must be composed of the very same stuff that has always existed -but now in a different state. Everything is connected -even if we cannot presently see how it is connected.
(This idea is expressed in biblical scripture...
Heb 11:3 "Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear." -or, in other words... The things which are seen are made of things which do not appear.)
We cannot extend the spacetime of the universe to before the singularity -but that has nothing to do with what may be external to the singularity.
It is simply an assumption that our universe is the sum total of everything.
For all we know it may be like one flower on a vine of many flowers -but even if there is only one, we are still only considering the one flower, and simply assuming it grew from nothing.
Physical spacetime as we know it may not have existed before the Big Bang, but something certainly did -and any sort of interrelationship is essentially similar to spacetime.
If we do not even allow ourselves to think beyond the spacetime of the universe, we certainly won't find anything there.
If it is similar to a program, why would we not consider how the program became programmed? Also -a program is very much a stored potential awaiting a signal to begin running in an environment. If the universe expanded, it likewise could be said to have expanded from a stored or compressed state.
If the universe expanded and is somehow elastic, then it could collapse, but it might also become a stable circuit of sorts.
Some scientists even believe that the physical universe has a foundation of sorts to which things flow from the physical universe -and vice versa.
Perhaps the physical things which formed with the universe break down again -and reform again elsewhere. That sort of cycle is pretty much everywhere within nature and the universe -so it would not be surprising if the universe itself was similar.
The Big Bang had far too much -and too extremely specific -potential for that potential to not have been itself caused somehow.