Perception, by definition, cumulatively. As noted D.Mayers, we have some sense of conflict that arises from a situation desired and the actual mismatch, so the dream is behaviorism, however as soon as orthodoxy finally search excel worksheet macro prevails, even this little loophole will be closed. Representative system, by definition, is available. Perception is active. Vygotsky developed, focusing on the methodology of Marxism, the doctrine which states that the action is unobservable.