 The real difficulty, of course, pertains not to these historical points, but to whether or not the project of a normative theory of adjudication warrants replacement just because rational determinacy does not obtain. As in the Quinean case, the Replacement Naturalist must maintain that without rational determinacy, normative theories of adjudication are banal, mere exercises in descriptive sociology. Critics of Replacement Naturalism contest this conclusion, though more by way of affirmation than argument (Coleman 1998, p. 285 n. 44). However, if the objection under consideration were correct, then a normative theory that specifies what the anti-foundationalist concedes—namely, that there is more than one (though not simply any) judicial decision that can be justified on the basis of the class of legal reasons—must, in some measure, be a theory worth having. Arguably, such a theory might be adequate to deflect the challenge to the political legitimacy of adjudication based on the indeterminacy of law, but does it provide the normative guidance to judges we want from a theory? Does a theory that tells judges they would be justified (on the basis of the class of legal reasons) in deciding for the plaintiff on theory X or the defendant on theory Y (but not the plaintiff or defendant on theory Z!) really provide normative guidance for judges worth having? The Replacement Naturalist answers in the negative: better to have a descriptive account of inputs and outputs, one that would license prediction of judicial behavior, than an indeterminate normative theory. This response, of course, makes Replacement Naturalism vulnerable to conflicting intuitions about the fruitfulness or sterility of different kinds of theorizing.