Interesting theory.
I think that the dreams are to abstract to be the image of an alternate&different version of the universe. Most probably, if we would agree that your theory is true, the most closest universe to ours would preveal in the dream.
But what if the deja vu is a short vision of a potential paralel reality from the future?
Upvoted. -#Padre
Inherently though, aren't we biased to only think that which we know can exist? What do the colors we can't see with out physical eyes look like? Surely, there is a creature in a place somewhere having a wholly different experience to the point where if were to experience a day behind it's eyes, you would think it total fantasy. If everything is a possibility, there is a realm where I have one eye, two eyes, three eyes, four eyes, one where I am an eye, one where I hear through my eyes, so on and so forth.
Basically, not all realities would have to conform to our expectations of logic since we can't really fathom infinite possibilities.
Good point.
Yeah, deja vu could be a short vision too. It sure looks like it when we experience it!