To the same effect is Professor D. C. Dube, who holds that the caste is a group of families which have social and economic duties which are connected with certain religious and moral duties and which are co-extensive with the social group; the caste group itself is the social unit of society and is not the same as the Hindu group, as a Hindu is made up of many castes. It is, however, possible to find a Hindu social group which contains the members of only one caste.
 In an earlier section of this article, which is concerned with the division of labour in the caste system, I have argued that the guru performs two functions: (i) he controls the jati or the social group; and (ii) he binds the members of his jati together. It may be interesting to point out how the two functions of the guru are worked out in the system of caste. The first function of the guru is worked out by the jati or the caste system itself. The jatis are determined by lot, and in many instances a caste will be composed of two jatis. A man belonging to a certain caste, say the traders, is assigned by lot to a certain class of the jati to which he belongs. If he belongs to the Kaathi jati 827ec27edc