A Cast System is a social structure in which one's social class is determined at birth. In general one's role in society is determined by the role one's parent's filled. One would be educated in their role from a young age, and know from a young age, their purpose in society. This allows the individual to focus their efforts in perfecting their role. Traditions rise as the individuals pass on their methods to the next generation, who can then, build upon the former's success.