01.The deja vu theory
What exactly is it?
Déjà vu” describes the uncanny sensation that you’ve already experienced something, even when you know you never have.
Say you go paddleboarding for the first time. You’ve never done anything like it, but you suddenly have a distinct memory of making the same arm motions, under the same blue sky, with the same waves lapping at your feet.
Or perhaps you’re exploring a new city for the first time and all at once feel as if you’ve walked down that exact tree-lined footpath before.
You might feel a little disoriented and wonder what’s going on, especially if you’re experiencing déjà vu for the first time.
It’s often nothing to worry about. Although déjà vu can accompanyTrusted Source seizures in people with temporal lobe epilepsy, it also occurs in people without any health issues.
There’s no conclusive evidence on how common it actually is, but varying estimates suggest anywhere between 60 and 80 percent of the population experience this phenomenon.
While déjà vu is fairly common, especially among young adults, experts haven’t identified a single cause. (It’s probably not a glitch in the Matrix.)
Experts do, however, have a few theories about the most likely underlying causes.
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