There is some cool research but there is so much that is unknown I think with most areas of psychology we tend to have somewhat of a good grasp about why things happen how they happen what these mental phenomena look like. With dreams we are so limited because they are entirely internal and private in nature and it's also really beautiful that our brains have been able to create a way for us to build these entirely private worlds and storylines and characters just for our enjoyment. Blind people can actually see images in their dreams which is insane to me because well they have no point of reference you know if I could make one scientific discovery in my life I think it would be being able to see other people's dreams