Sibal takes the bench to his chart which shows heterogeneity within the backward castes

CJI: so there is heterogeneity in terms of the preexisting occupation, in terms of resources or lack of resources, in terms of all indicators in a backward class. The status of every caste may not be the same in the social hierarchy aswell. Some may be a little more advanced, some little less advanced, some maybe particularly underprivileged in terms of infant mortality, maternal mortality which sort of defines

Sibal : now that assumption made in the observation of Justice Krishna Iyer in Thomas.