  But what, exactly, is the principle—constitutional or moral—that always bars the use of race as a means to “terribly important objectives”? Alan Goldman did more than anyone in the early debate to formulate and ground a relevant principle. Using a contractualist framework, he surmised that rational contractors would choose a rule of justice requiring positions to be awarded by competence. On its face, this rule would seem to preclude filling positions by reference to factors like race and gender that are unrelated to competence. However, Goldman’s “rule” blocked preferences only under certain empirical conditions. Goldman explained the derivation of the rule and its consequent limit this way: