There are several hypotheses about what causes déjà vu. These range from the paranormal—past lives, alien abduction, and precognitive dreams—to memories generated from non-first-hand experiences. Now, researchers are in the process of exploring déjà vu and how the brain can sometimes short-circuit.
Have you ever had the strange sensation of being precisely where you've been previously, doing exactly what you swear you have done before? It might be while redecorating your home room, conve...
