 Egalitarians can respond to the anti-egalitarian critique by conceding that it is the nature of some (however certainly far from all) essential norms of morality and justice to be concerned primarily with the adequate fulfillment of the separate claims of individuals. However, whether a claim can itself be considered suitable can be ascertained only by asking whether it can be agreed on by all those affected in hypothetical conditions of freedom and equality. (See, e.g., Casal 2007 for a deeper discussion and critique of the doctrine of sufficiency.) This justificatory procedure is more necessary if it is less evident that what is at stake is actually suffering, distress, or an objective need. In the view of the constitutive egalitarians, all the judgments of distributive justice should be approached relationally, by asking which distributive scheme all concerned parties can universally and reciprocally agree to. As described at some length in the pertinent section above, many egalitarians argue that a presumption in favor of equality follows from this justification requirement. In the eyes of such egalitarians, this is all one needs for the justification and determination of the constitutive value of equality.