.. or, could it be a future memory?
We know the feeling (or at least 66% of us do). Déjà vu is the belief you’ve been here or done that before, when you know there’s absolutely no way you could have. The phrase déjà vu is French, meaning “already seen.”
But we know less about why we have the feeling. Is déjà vu evidence of a past life, an out of body experience or just a good old neural misfire?
Source: No, you haven’t read this déjà vu story before – CNN.com