what is this photo, you ask ? well, it’s my latest OA Theory and you’d better pay attention because it’s a little bit confusing !! (cheers to @the-fifth-movement for helping me sort this out)
The premise of this theory is that there are multiple dimensions, each containing the same people. When your body dies in Dimension A, your consciousness leaves Dimension A and joins with your consciousness in Dimension B. (This will make more sense when I explain it in context of The OA.)
So: after the bus incident in Dimension A, Nina’s body is dead. Her consciousness jumps from Dimension A to Dimension B.
In Dimension B, Nina survives the bus incident, now blind. She becomes Prairie, meets Hap, etc. etc. Then, when trying to escape, she dies again. Prairie’s body is dead in this dimension. Her consciousness jumps from Dimension B to Dimension C.
In Dimension C, Prairie - now OA - survives being hit on the head. She helps everyone figure out the experiment, helps Evelyn, gets dumped by the road, winds up at Crestwood.
Still in Dimension C, OA tells her story: the story of her collective consciousnesses, A+B+C. Finally, she performs the movements outside the cafeteria and gets shot.
In Dimension C, OA’s body is dead. Her consciousness jumps once again - this time to some unknown Dimension D.
I think this theory has some validity to it because it gives an explanation as to how they are able to change dimensions, and why they experience amnesia after travelling. (OA B’s memories are much stronger than OA A’s memories when they are in the same body, although she is always able to recall things that provoke intense emotions… such as Homer.)