...another part of the puzzle, recognized by Buddhism

:
the observing mind that perceived 3D and dream reality is always the same - so the eye/I/observer doesn't change when consciousness shifts between the realms. That is quite remarkable to realize, because it means that the I is changing the environment for experience. The surrounding changes.
Also, a personal note: shortly after waking up I always wonder why it would be of importance to write the recent dream down (still in my mind), as it doesn't seem to be any special at all. It is just a story. But pretty much always it emerges a deeper meaning when having a closer look at the dream with the 3D state of conscious.
The remarkable thing here is that -while still being in dream-realm- the dream is a a closed story in itself. Bringing the story of the dream over into the 3D realm it actually connects into 3D situations in one's life.
It would be pretty interesting to do it the other way around - to consciously bring 3D information into the dream realm. Gee, that means becoming lucid within the dream AND remembering one's 3D reality AND connect 3D situations with what is going on the dream AND not causing oneself to wake up at the same time. ...interesting, this seems far more difficult than the ordinary way - waking up and remember the dream. This could mean that our consciousness is driven towards denser reality, towards 3D - without our conscious control, it just seems to happen that way.
Well, ultimate reality probably says something different.
Have a great day (and dreams

) everyone!
Blessings,
Andreas