De Ja Vu, well this is not really my subject but I can tell you what I have read about this. Pro Robert Winston suggests that as we grow the front section of our brain holds situations and reminds us to be careful, this is something that young cave children would have needed to keep in mind from predators. Each time we get into a situations our brain says “I have been here before WARNING” this sense is what gives us the feeling that we have done this before, I suppose the way that the brain grows in different people could reflect why some feel it more than others. But I am not a brain specialist, so I hope this helps.
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