The science fiction in this thread has been expanding. I not only like science fiction but wrote a trilogy (not published) so that is cool. But I am also a physicist and like to be clear about the difference between entertainment and reality.
The notion that there are no other universes is equally speculative. I don’t know what religion you are, but in Christianity, God is the creator of this universe… the subjective explanation as it were. Therefore to claim that this universe is sufficient to contain the whole of reality doesn’t make any sense in that context. No other universes are absolutely required in Christianity – I will agree with you only that much. But the description of John 14:2 might suggest otherwise and I certainly believe the spiritual existence is far more vast than the physical universe with the obvious possibility of more universes.
The religion of Pythagoreanism, then?
By “once called atoms” are you referring to the elemental particles? But the description of these as things moving through the void isn’t right.
Space is part of a space-time manifold. It is certainly not well described as a fixed set of points. this is some pretty antiquated notions you have here.
This is even more incorrect. This Euclidean understanding of space time as a motion picture film of instants strung together is a intuitive common sense understanding based on living in such a small portion of the universe. But the structure of space-time is locally Minkowski which is very different than this.
Terry Pratchett writes novels about a flat world sitting on the back of three elephants standing on a turtle. When an antiquated notion of how things are doesn’t fit with measurable evidence then there is nothing wrong with inventing fantasy worlds based on the concept. But it cannot change the fact that it doesn’t fit the measurable evidence.
Not as an approximation for life on earth. But it certainly doesn’t work for the any larger scale analysis of things… not even when you are working with satellites orbiting the earth for GPS.