'''Second variant:'''
According to a second general variant of the unary predicate of mental states conception, mental states are conscious ''if we experience'' [[consciousness#'What it is like to be' consciousness|what it is like to be]] in the respective state, or ''alternatively'' if ''there is something'' [[what consciousness#'What it is like to be' consciousness|it is like to be]] in that state. A third, closely related but distinct notion would be to define a mental state as conscious if we ''know'' of the mental state's qualitative features.
=== Binary predicate of individual beings ===