The study of dreaming is called oneirology, and it's a field of inquiry that spans neuroscience, psychology, and even literature. Still, the plain fact is that the reasons why we dream are still mysterious. But that hasn't stopped scientists from coming up with some pretty fascinating hypotheses. Here are ten of them.
If we're to believe some of the latest scientific research on sleep (or even just viral YouTube videos), the effects of dreams have likely bewildered Earth's creatures for hundreds of millions of years. But humankind, in particular, has fostered a unique and lasting fascination with dreaming.