a what is stuff
This site makes some profound and confusing statements about reality. It provides a thinker's attempt to "catch its own thought" both in what stuff is and what it is not. To be crystal clear, there are no amount of words (stuff) that can capture reality in any way. That of which could somehow be written in a table of books to profess a unified idealized set of laws that govern all bodies or minds (stuff).
This isn't because there exists an outside, where god(s) reside that create reality and we just can't get to them to ask the question(s), it's because there is no independent outside. There is no location/time in which such an entity could exist, no matter how deeply you examine the middle of things or how far you go to the edge of the same. This confessional is as "old as any man" that could possibly compose written words. That prospect includes theory of relativity, a rehash of Taoist thought that "all things are relative" and contain no independent state of their own. Again, not to be fooled, this includes conscious minds, a state of being that incorporates the unconscious mind.
It's what eastern thinkers describe as enlightenment, to "see" this unfolding of reality as is. But, not to be fooled, there is nothing special about enlightenment. As far as states go, it too does not exist or persist away from that which is "it's own" reality.
being
Being is a catch-all for stuff (and not stuff), a generalized expression as this reality. There is a saying among non-dual philosophic interpreters that "nothing can ever be added or removed from being". Being would most certainly include the unconscious mind, which is singled out as empty, no stuff to be had, and the conscious mind, that can also experience said emptiness, as well as stuff (in it). It would be normal to assume that one does not preclude or impede the other. Being is adichotomy, dual, eternal.
not-two (non-dual)
As an expression of experience, there is no other sort of reality that exists apart from duality. Ergo, this arises a mind/body non-dual existence of being. Meaning you cannot siphon off a chunk of being, examine it, dissect it and report back your findings to those poor saps stuck inside a duality.
science (and all other past-times)
As above, so below. A species that practices creation, is the creator of said creation. This includes all the stuff studied and modeled "after". While one might find they spent an entire life "studying science" as waste, by this same thought, you could also conclude, what else were you to do? Atoms do it, so do biologies, planets, stars, and galaxies, etc. There is no other sort of thing occurring, of that you can be certain.