I know we have two threads here on dreams/nightmares, but since I'm going off on my own tangent I don't want to hijack either. SYM mods, if you feel it more appropriate, please do merge my thread.
As I read the through the posts on nightmares I was reminded of a question I have often posed, Namely, just where do dreams come from? There are many theories, I'm not sure if any recent research has been done though, perhaps CE will be able to shed some light if/when she sees this thread.
I have done plenty of my own speculating however, because I have some profoundly visceral dreams... so vivid that sometimes I seem to bear their physical markings.
Naturally this has led me to plenty of reflection..

I guess personally I support the notion that dreams are manifestations of the deeply buried subconscious. They can be our internal demons acting out... which seems to give shape to nightmares... Or, on other occasions they become a venue.. an expression of thoughts and desires that cannot be allowed the light of day..
Of course, they are not always literal, in fact they rarely are. Rather, dreams/nightmares are replete with symbolism, hence the need for interpretation. Though, as I think we know, there is a danger here, since interpretation is always going to be deeply personal and subjective.
Anyway, thoughts? theories?