why do we get deja-vue's?

Answer 1

As you experience the world, you take in a lot more sensory data than you actually notice. Your brain filters out a lot of information that isn't essential for you to get by in the world. You don't actually *notice* everything that you see. If you look out a window at a cat or something, your brain will usually filter out the dirt on the window, the movement of leaves in the background, all the little stones that are on the sidewalk that the cat is sitting on, and everything else. If your brain didn't do this, then you wouldn't be able to make sense of the world for all the little things that occur at the same time as big things that your brain knows that you must pay attention to. I.e., if your brain lets you "notice" just how many stones there are in the street as you cross it, you probably wouldn't be able to react quickly enough to get yourself out of the way of an incoming car.

But, just because you don't consciously notice everything doesn't mean that all that data doesn't go into your brain and leave a mark there. All that static input does stay in your brain - people with "photographic memories" are able to recall all those little details, while the rest of us lose them to the complexities of our brains.

Deja vu is when there is a similarity between the static that you receive at one moment in the present and the static that you had received at another moment in the past. Your brain, which is geared to pick up on similarities like that, notices that there is something similar going on, and you get the feeling that you've been there before. But since your brain is also filtering out all the static, you can't always notice what exactly it is that is triggering that sensation.

Or maybe we all live in a big computer fantasy and deja vu is a glitch in the system.

Answer 2

Deju vou or how ever you spell this is once you investigate something and your recommendations takes it in and sees it and then a memory of yours collides with it which creates deju Vou. wish this enables clarify stuff. right that's a small image to help What you spot -----> Deju Vou <---memory your recommendations concept

Answer 3

Our mind mixes up the timeline of our memories sometimes.

Answer 4

Because Denzel Washington says so.

Answer 5

Something close in your memory triggered that view.
It almost happened.