The brain produces millions of messages every second and it deciphers what to keep. Our brains have the ability to physically restructure responses to thoughts, behaviors and emotions. It has the ability to reason, make decisions, produce feelings, to visualize and to communicate with others. The brain is a complex system that scientists can't truly figure out. Bert Thompson, Ph.D. and Brad Harrub, Ph.D. explained that the brain can carry out countless physiological functions, most of which we understand at only a very basic level. "How can we take three pounds of matter, and in that small space cram all of our education, memories, emotions, likes and dislikes?" With such complexities, the brain continues to stump researches who want to understand its vast depths.