The study of origin and evolution of man gives new perspective for understanding his behavior. Physical behaviors such as walking and throwing are results of biological evolution which has not kept pace with sociocultural evolution. Irrational decisions by man in social, cultural, and political fields are results of this brain activity. (PS)

Direct observations of animal behaviors can provide clues to understanding human behavior. By such observations of animals close to man, certain behavior patterns have been established. Man's behavior in social and cultural fields is an adaptation of these behavior patterns. (PS)