according to stephanie jamison and joel brereton, a professor of sanskrit and religious studies, "there is no evidence in the rigveda for an elaborate, much-subdivided and overarching caste system", and "the varna system seems to be embryonic in the rigveda and, both then and later, a social ideal rather than a social reality". historian r. s. sharma states that "the rig vedic society was neither organized on the basis of social division of labour nor on that of differences in wealth... [it] was primarily organised on the basis of kin, tribe and lineage."