Science, unless I'm mistaken, tells us that electrochemical exchanges within our neural networks are what dreams and thoughts are manifested from. Problem is, to say that dreams are a manifestation of specific phenomena is to utterly refuse to say what the dreams literally are. How can science overcome this? Is it a limitation of scanning resolution, the incomplete nature of physical models, or must we develop technology than can translate brain signals into sounds, images and emotional states? I am aware that this forum is not philosophically oriented, as I am not interested in discussing this subject in such a manner. I want some hard science on why it has been so difficult to study dreams on a scientific level.