Moral relativism, like most relativistic positions, comes in various forms and strengths. It is customary to distinguish between descriptive or empirical, prescriptive or normative, and meta-ethical versions of moral relativism. These views in turn are motivated by a number of empirical and philosophical considerations similar to those introduced in defense of cultural relativism. The purported fact of ethical diversity, the claim that there are no universally agreed moral norms or values, conjoined with the intractability of the arguments about them, are the core components of descriptive moral relativism. The anti-relativists counter-argue that the observed diversity and lack of convergence in local norms can in fact be explained by some very general universal norms, which combine with the different circumstances (or false empirical beliefs) of the different groups to entail different particular norms. The objectivist thereby can accommodate diversity and lack of agreement at this higher level of generalization (see Philippa Foot (1982) for this type of argument).