Consciousness is an interesting thing. The only way to really study it is through self reflection, meditation and awareness.
Stanislav Grof does really interesting work on this subject.
- A brain forming by itself at random is so incredibly unlikely that the known universe as we conceive it (a few billion years old and a few billion light years across) certainly contains no such thing. The point is that it's not infinitely unlikely. So a universe in equilibrium (after the "heat death" of our own, for example) would eventually create such a thing at random. And that this creation, as unfathomably improbable as it is, is still unfathomably more probable than the entropy of the whole universe reversing and creating something like we see now. So the argument is that, if an equilibrium state of the universe is possible, it is actually almost certain that you are such a disembodied brain, rather than the universe existing and your memories being true, etc.
- LSD and DMT (Ayahuasca) made me realize that "I" am an illusion. My ego is afraid of death, but I am not my ego. Think about it: anything that is mine is not I. I am the subject, my things are my objects. So I am not my body, my car, my house, my clothes, my ego. So what am I?
- There is no end to consciousness and no end goal.
- Goals are things that can keep the experiencer engaged in the experience and are creations to add spice to reality and existence.
- You can have any goal you want. It all is an experience.
- You can have super intelligence without consciousness.