The functioning of awareness requires that there be a a theory of awareness, it needs to be explainable to itself even if such an explanation is rarely or never called for. Such a theory is constrained only by the functioning of awareness and obviates any connection to the truth of awareness. While such a theory stands for the truth of awareness it does so only within its own terms. It's limit is that it is able to grasp the fact that it has no grasp on, no picture or model of, the truth of awareness or of the experiential reality which it serves, in short of the thing-in-itself.