Abstract

In Legality, Scott Shapiro introduces what he calls the “Planning Theory of Law.” Shapiro introduces the idea of a plan with examples from outside of the law. He then must provide an account of what is distinctive about law, such that the other plan-based social orders are not also legal systems. He gives two answers: first, a legal system is organized by a moral aim. Second, a legal system is self-certifying. I examine these in turn, and argue that each can only characterize what is distinctive about law if the relevant moral problem that law aims to solve is itself specifically concerned with authority—that is with who gets to decide about what. Other forms of planning assign roles to people to solve problems that have nothing to do with authority; law uses role-based authority to solve a moral problem that is fundamentally about authority