 However, the intended conclusion of an argument in this style is more modest. For here the relevant principles do not take one from a purely descriptive antecedent to a purely normative all things considered consequent, as with (e.g.) the principle of utility. Rather, the relevant principles here take one from an antecedent deploying a thick evaluative concept (like the concept of justice) to a consequent deploying a thin normative concept (like the concept of a reason). Such an argument might maintain, for example, that competence with the concept of justice commits one to a moral principle of the form, “if an action is just then there is at least some reason to perform it (namely, its justice)”.