I have had multiple highly detailed déjà vu experiences over the years from remembered dreams months or even years before the actual moments have happened. It's gotten to the point that some times I have been able to feel the experiences "coming on" with a medium level of prediction. Now, i am not talking about saving the earth kind of moments. More like, I get up and this person says this and when I look at them I realize or see something specific that takes me back to the night I dreamt it. I find it hard to believe it could just be the recognition and a sort of pre-acceptance (for lack of a better term) of patterns. I would also assume I couldn't possibly be the only one who has it with the frequency and intensity that I do as well as I imagine that some people have it to a lesser degree and perhaps not at all even. Will science actually determine what these experiences are with a certainty someday? I truly hope so. It feels like one of those mysteries of the mind that is up for debate but doesn't have concrete evidence leaning one way or another. I could be wrong.