The eerie feeling that you've been here and done this before is called déjà vu. It's French for “already seen,” and it can be a very strange and even unsettling experience. Logically, you know you haven't experienced this moment before, but your brain is telling you otherwise.

Does déjà vu mean anything?

"Déjà Vu" is a common intuitive experience that has happened to many of us. The expression is derived from the French, meaning "already seen." When it occurs, it seems to spark our memory of a place we have already been, a person we have already seen, or an act we have already done.

Is déjà vu a warning?

Déjà vu occurs briefly, without warning and has no physical manifestations other than the announcement: “I just had déjà vu!” Many researchers propose that the phenomenon is a memory-based experience and assume the memory centres of the brain are responsible for it.