’Consciousness’ is a term often used as a synonym for self-awareness, or for social
coordination of internal states, but I’m using it in a limited, technical sense: a system has consciousness
if it feels like something to be that system. I.e., something is conscious if and only if it has subjective
experience. ’Qualia’ refers to the elements of consciousness, e.g., redness.
The Function of Dreaming: The Overfitted Brain Hypothesis