godnotgod
Thou art That
Self consciousness is merely a more complex form of interaction whereby a human or animal is capable of interacting with itself, its own brain and not with just the external environment as a tree or rock does.
The point is that of thinking about the interaction, as compared to just being at one with the interaction. The being at one with the interaction (I am using your vocab here to make this a little less painful) is the same thing as knowing, or consciousness.