Hello~
This new theory consists of every second, millisecond, nanosecond, always happening, over and over and over again. Such as a machine that does the exact same task over and over. This idea is basically a way of thinking about time in an infinite way, everything that; has been, could have been, will be, and could be, is always happening, and if you look at a giant time-line of everything that's happened in recorded history, also forthcoming events, it's a long straight line up to the present, and once there, there are an infinite amount of branches off, which are possible realities, and with each new choice a different branch is selected, and the others move off this time-line, but remain in connection with all the other infinite possible realities (the multiverse theory). But if everything is always happening, it makes Deja Vu make a lot of sense, because if everything is always happening, then it makes sense that some of the information will slip backwards or forwards or even sideways, which explains why we dream of realities very similar to ours, but slightly different but everyone there believes it to be normal.
If you have questions or comments, just ask~