1 a : the illusion of remembering scenes and events when experienced for the first time b : a feeling that one has seen or heard something before
2 : something overly or unpleasantly familiar
This is one of those things where you have to trust your gut. I say its just your subconsious (ick) noticing events from your surrounding and creating a list of possible outcomes based on that. When something on that list happens you experiance Deja Vu (just a personal idea)
