Castes in India: Their Mechanism, Genesis and Development was a paper read by Dr. Bhimrao Ramji Ambedkar at an anthropological seminar of Dr. Alexander Goldenweiser in New York on 9 May 1916. It was later published in volume XLI of Indian Antiquary in May 1917. In the same year, Ambedkar was awarded a Ph.D. degree by Columbia University on this topic. In 1979, the Education Department of the Government of Maharashtra (Bombay) published this article in the collection of Ambedkar's writings and speeches Volume 1; later, it was translated in many languages.
In the paper, Ambedkar made a presentation a social phenomenon that emerged from the strategy of the Brahmins who adopted a strictly endogamous matrimonial regime, leading the other groups to do the same in order to emulate this self-proclaimed elite. He said that "the superposition of endogamy on exogamy means the creation of caste".
Ambedkar presented his paper "Castes in India: Their Mechanism, Genesis and Development" at an anthropology seminar, in which he started with the following statement:
I need hardly remind you of the complexity of the subject I intend to handle. Subtler minds and abler pens than mine have been brought to the task of unravelling the mysteries of Caste; but unfortunately it still remains in the domain of the "unexplained," not to say of the "un-understood." I am quite alive to the complex intricacies of a hoary institution like Caste, but I am not so pessimistic as to relegate it to the region of the unknowable, for I believe it can be known. The caste problem is a vast one, both theoretically and practically. Practically, it is an institution that portends tremendous consequences. It is a local problem, but one capable of much wider mischief, for "as long as caste in India does exist, Hindus will hardly intermarry or have any social intercourse with outsiders; and if Hindus migrate to other regions on earth, Indian caste would become a world problem." Theoretically, it has defied a great many scholars who have taken upon themselves, as a labour of love, to dig into its origin. Such being the case, I cannot treat the problem in its entirety. Time, space and acumen, I am afraid, would all fail me, if I attempted to do otherwise than limit myself to a phase of it, namely, the genesis, mechanism and spread of the caste system. I will strictly observe this rule, and will dwell on extraneous matters only when it is necessary to clarify or support a point in my thesis.