One concept I have considered is that if time were cyclic and not linear, it would mean time had no beginning and no end, also that each cycle would repeat itself identically.

If this were the case and we are all souls entering the cycle of reincarnation to play our parts on the world stage, then this particular lifetime would be the most significant of the cycle and in a sense the most memorable too. If this concept were true, then it makes sense that deja vu would be strong at this point - it also makes sense of genuine prophecy and fortune telling.

The idea of repetition is a difficult one to swallow but I think if I (the soul) is restored to my original condition then the choices I make this time around the cycle would be the same as the last. I cannot change my authentic self, just like the light would reflect the same through a cleaned diamond even if it had been stolen and hidden in muck for decades.

As I said, just putting forward a concept not saying it has to be accepted or believed.