For example, you're gallivanting around the non-physical in some alternative reality and you run into a "Dadipladouche"! (That's completely made up, btw ^_^) How will you know it's a Dadipladouche? Now, *I* know what a Dadipladouche is as I've run into one before (since this is made up, duh obviously I haven't lol)...
so when I run into one, I have something from my experiences to draw from so that I perceive it as a Dadipladouche.
If I didn't have the experience to draw from, my consciousness would have to scour my experiences for something that resembled it as closely as possible and then display that.
That's the interpretation factor of the subjective nature of our non-physical experiences.
It would then appear to me as whatever it was that was the "closest representation" to what it was that my consciousness could find.
Say this dadipladouche was some kind of "big scaled creature", it might appear to me as a Dragon or a Dinosaur, since that would be the closest matches that my consciousness could make in order to "define" it and make it "understandable" to me.
The key here is "make it UNDERSTANDABLE TO ME".
You can't experience something if you can't, in at least in SOME SMALL WAY, understand it.
You might experience a reality frame and all you experience are flashing white lights.
That's not because that particular reality frame is made up of flashing white lights, that's just because "flashing white lights" was the only way your consciousness mind could interpret that which you were seeing.
Now, say you have two people.
They can experience the "same reality", however it's also very possible that they will each perceive that reality in completely different ways.
One person might see that "flashing white lights" reality, where the flashing lights are floating, orbs of light randomly dispersed about...
whereby the other person might end up having an experience of rows upon rows of car headlights pointing towards him/her.
They both experienced the same reality, but the source of the lights and the nature of the lights are perceived completely differently.
What you experience in the non-physical (be it dreams, lucid dreams or astral projections/obe's) IS REAL.
How you experience it is a metaphor...
an interpretation based upon the sum of your previous experiences as something that your consciousness can draw from for that interpretation to take form.
It's really simple.
It's all based around the culmination of your previous experiences.