1. The document discusses the evolution of understanding caste in Indian society from various perspectives over time.
2. Early theories on the origin of caste included the traditional theory of divine origins, the racial theory of Aryan invasion, and the political and occupational theories related to the role of Brahmins and the division of labor.
3. Louis Dumont's influential work portrayed caste as organized around the principles of purity and pollution, emphasizing the totality of the system over individual members.
4. More recent views have examined caste as involving notions of bodily substances and interpersonal exchange, and have taken a comparative perspective looking at when and how strict separation and endogamy operate.