Deja Vu', why do I feel like somehow I know you?
Hmmmm, now this is a more varied topic than you might think and lots more complicated. But the most frequent experiences are along the lines of people that you think you have known from before, events that set off bells, usual historical ones, and places. You've been to a place, you know you never actually have before, but you feel you know it. Or meet a person, same thing. You know them from some where. The hardest part of all of this is, well you recieve so much data to the brain on a daily basis, via ...