That's a very good point.

I always question "did I really...nah can't be deja vu surely some other explanation" to any apparent deja vu I have had as do most people I expect. Perhaps sometimes it may be down to coincidence with the sometimes repetitive nature of life - but certainly not always. We're dismissive of even contemplating the possibility that we could have preminitions of the future because it's just deemed as being 'weird' and abnormal. I think we must embrace Sci-Fi more and be more open minded, for whatever we imagine, no matter how extraordinary it may be could very well exist somewhere in the universe and indeed at any time. Some people would think that sounded crazy, but in what appears to be an infinite reality, an unbounded universe (and/or multiverses) - anything, anywhen really is a possibility.