Have some of you have had movie like dreams and ones of epic proportions? It does not require longevity but the long vivid dreams I have gad have been very complex.
This is what started me to think about a dream's memory.

Example:
I am having an extended dream that has an unfolding plot, much like a movie. In these dreams there is a lot of information that is memory. Information that is required for the events that are currently happening, to happen.
Things that are givens. Things you already know.

Has your brain thought these out perceptions as you call upon them in your dream.
How does this in depth capacity of knowledge seem to already exist, if it is not realty?