In a parallel universe, this exact moment has happened, but in another parallel universe, it happened before you even experienced it. Does your brain hurt already? This could be one explanation for the phenomenon known as “Déjà Vu.” Although déjà vu itself is quite a puzzling mystery, I think the strangest thing about it is that according to the “Scientific American,” more young people experience it than adults. In fact, the average person experiences déjà vu for the first time between the ages 6-10.

“Déjà Vu” is a French term that translates as “already seen.” It’s extremely difficult to explain what déjà vu is, so let me establish what it is not: déjà vu is not merely remembering something or getting a familiar feeling because you’ve done that same thing before. It’s the same exact feeling you remember having. You remember having that feeling so well that you could possibly predict the future.

Scientists are not sure why déjà vu occurs, but there are several theories. Keep in mind these are just theories, not facts, so try to keep an open mind. As mentioned at the beginning of this article, the parallel universe theory, according to American futurist Dr. Michio Kaku, can explain the mysterious phenomenon and states that déjà vu might be caused by. This theory states that humans may have the ability to “flip between different universes.” But if you are not a believer of incredible circumstances such as this, here are some theories that are much easier for the logical human brain to wrap around. Some theories suggest that it’s just a glitch in your memory. Déjà vu is most likely linked to the temporal lobe of the brain. Experiments conducted using people who have temporal lobe epilepsy report having déjà vu before they have a seizure.

While some theories are quite complex, like the multi-universe theory, sometimes it only takes a simpler theory like the memory glitch theory to blow your mind. Whatever people choose to believe, déjà vu will forever remain a mystery.