What is a deja vu?

Deja vu is a feeling of already having experienced the present situation. What people think about this, I think, means different things to different people. Like for instance, some think we've been through this life before, or that they're reincarnated. Or just something they saw reminded them about another place that just looked like what they saw. I've felt this way a few times, but I don't know if reincarnation was the reason for it because I don't know if reincarnation is really true. That's my opinion.

I believe that deja vu is experienced based in this lifetime. We say its deja vu when we feel the same experience before in this lifetime, too. if you mean reincarnation in connection to this, I dont thinks so because we have more population than before.

It is something that is happening now that you think have happened in the past. With the same settings and people, you can say that it's a repeat. Some says it can be one of your dream that happens in reality.