Many of us know the feeling: You'll be going about your day, minding your own business, folding some laundry—nothing out of the ordinary, when suddenly a sensation of familiarity washes over you, and you're completely aware that it's happening: I've been here before.
Except you haven't. Or have you?
You might try to think back and pinpoint when you'd experienced this moment before. But just as quickly as the feeling hits you, it's gone.
Did you predict the future? Were you seeing something from a past life? What is déjà vu, anyway?
The phenomenon of déjà vu (French for "already seen") is, scientifically, pretty poorly understood, but there are a few theories:
Déjà vu is estimated to occur in 60-70% of us, most commonly in those between the ages of 15 and 25. Why? We have no idea. Interestingly, though, I had previously written about déjà vu years ago out of my own curiosity on the matter, having experienced it fairly frequently. I'm now 26, though, and can't remember the last time I had an episode.
Are any of these theories correct? We may never know. After all, since episodes of déjà vu are completely unexpected—not to mention, for most of us, extremely rare—real empirical research on the topic is next to impossible.
What are your experiences with déjà vu?