scientists desribe déjà vu as a feeling that a particular situation is familiar to you, even if you have never experienced it before, a false memory of a current happening. i disagree — it is the description of not the true déjà vu phenomenon. i have had many times the true déjà vu experience. when i was much younger i even put it on test, because the ‘already seen’ memory events were longer back then, allowing to change my actions and see what happens next. for example in one case i was sure i had seen the exact situation just a few weeks before in a dream and one woman was about to appear from behind the corner of the building, where i should have seen her up close. instead of going towards that corner of the building i turned, made a few steps and stopped to see if the woman appears. she did.. exactly the same woman, and walked exactly the same way as i saw it in my dream. these experiments with déjà vu (i didn’t know back then the term, but i knew the phenomenon exists and is nothing special) clarified to me that one can change the future which one has seen in dreams, or felt otherwise, which means that future is not predestined.