It's as much a theory as saying that a body is formed of limbs, torso, head, etc. I have a body, I inhabit it and can observe it directly.

You're trying to word your way out of words.

It's like you're asking me what's atop a mountain and you keep making conjectures and assumptions about what is or isn't up there. The answer is to just go climb it instead of taking your assumptions for reality.

> I don't think you can be an observer and be the observed at the same time.

I can, because I practice it.