In Bernard J. Baar's book 'A Cognitive Theory of Consciousness,' he describes the brain as having a single conscious area that can be occupied by one thought at a time. The unconscious part of the brain stores memories and experiences and, like the conscious brain, is capable of performing tasks; however, it does so automatically, unlike the conscious area that requires the intervention of the 'self.' The first time we are given a new input, sensation, or experience to deal with, the conscious brain is responsible for analyzing it, comparing it to something that has occurred before, and dealing with the action accordingly. Repeated exposure to the same input drives the response into the unconscious area of the mind, so the next time the same experience is encountered, an automatic reply can be recalled without requiring conscious intervention.