To perceive is to doubt: the relativity of perception.

The uncertainty or entropy theory of perception is founded on the premise that for perception to occur, there must first of all be uncertainty. That is, perception or awareness is relative to the expectation of the perceiver. This view of perception leads to a seeming-paradox. How can there be uncertainty unless the alternatives have previously been perceived? But, by the premise of the theory, how can the alternatives have been perceived unless there was prior uncertainty? It is shown that this paradox may result physiologically in the concurrence of sensory and motor (or "active") events during the process of perceiving. It is shown, further, that a close analogy exists between systems of formal logic and systems which perceive through uncertainty. This, in turn, suggests a basis for a calculus of perception.