There are few things one must know preliminary to studying the brain against other things. The faculties within the brain function because of two components. There is active memory and there is long-term memory. Active memory decays usually around seven to nine entries. This is not limited to the size of the entries. Their range is nearly unlimited, but their average can range from a single number to a single word, to a list of words, to entire events, scenes, lifetimes. The active memory in effect is taking picture of the rest of the brain and comparing it to itself as it changes, signalling difference and varying in scope. It can expand and contract it scope. One concept, something relatively small when fitted into the entire possible number of details totally possible in the universe can occupy all the components of the mind. To begin to grasp this idea, think of a cat. On this cat there lots of parts like eyes, legs, whiskers, and so on. If you were instead realize with more intensity that there are hairs that make up the fur or cells that make up the cat, it is totally possible to become completely enthralled with a single tiny aspect without losing depth, and range. The only difference is a person who looks at only one tiny individual idea will seem incomprehensible to other people. If all the parts of the brain are still available, that incomprehensible person does not lose any information. The greatest principle behind the brain is that it is not limited by the environment. The environment is a matrix as perceived by the brain. The matrix instead of being made of x and y-axis, it is made up of pictures of chemicals, connections, and glucose consumption, and these are compared to changes made over time and converted to symbols. Our perception is reality, and our reality is made up of perception.