To answer the original question, lucid dreams can feel even “more” real than reality. Many of my Luicd’s could be described as astral projections (undecided about “reality” of OB’s and AP’s) and cause I always seem to have extra senses in my lucids it can can seem more “real” than reality.
Senses like feeling the atoms of a material you pass through, knowing about the object you see before interacting with it etc and all the time feeling completely comfortable with this knowledge makes it seem like our “reality” is just a pale imitation of the true “reality” of a lucid high dream.
Of course thats only to be expected as my mind is in charge, so its no proof of the reality of a dreamed world or the reality of a spirit double of yourself being able to move around or the reality of the astral planes of existance.
I do “feel” that psi (extended human abilities yet to be proven by mainstream science, they do not take cumlative evidence) can become wrapped up in what we lucid dreamers do in our “un-normal” sleep.
I seen posts on forums where lucid dreaming is not known about, where the people who clearly don’t think they are asleep have been attacked by what we would call fears of our own mind. They have been left physically scarred (claw marks etc) by the attacks however and objects left behind, its never happened to me and I only truely belive what I experinece myself but I didn’t beleive they were lieing, just scared.
Shared dreaming, healing dreams, prophetic dreams etc I think are all do do with psi states that are easier to access in a lucid or dream like state. As for the other unexplained, ufo’s, astral dimentions etc, no-one on this forum knows one way or another, thats the only thing I can guarentee!
I think there’s a fair case for astral dimentions, mathermatics and physics seems to more and more allow for them and if they exsit I’m sure they could be accessed.
As I said I only beleive when I’ve experienced somthing, however maybe I have but like many other people can’t even prove it to myself.