Scott Shapiro’s Legality argues the positivist Planning Theory of law meets the anti-positivist challenge posed by the argument from theoretical disagreements about law in Ronald Dworkin’s Law’s Empire. Legality equates theoretical disagreements with what Shapiro calls meta-interpretive disagreements, and then offers a legal theory of meta-interpretation that purportedly accounts for the existence of meta-interpretive disagreements by showing how it is rational or intelligible for legal actors to have such disagreements. This paper argues Legality misconstrues Law’s Empire. The true challenge of (...) ATD was to provide a theory of law that would vindicate the judgment that law is discovered in cases of theoretical disagreements, rather than made. Legality sees the challenge of Law’s Empire to be to show how it is rational or intelligible for legal actors to have theoretical disagreements, which is different from showing how there really is pre-existing law to be found in cases of theoretical disagreements. So the challenge Legality addresses is circumscribed. But Legality does not even succeed at addressing its own more circumscribed challenge, because, under the Planning Theory of meta-interpretation, legal actors are mistaken to think they are finding law in cases of theoretical disagreements. (shrink)