On a popular understanding, the rule of law is valuable because it enables people to plan their lives. However, planning conceptions of the rule of law are undermined by the sheer quantity of legal rules, regulations, and policies characteristic of modern administrative states. Under conditions of hyperlexis, people cannot reasonably be expected to reliably use the law as a guide to conduct. Rather than conclude that the rule of law is inimical to the administrative state, however, I defend an alternative conception of the rule of law. On what I term a contestatory conception, the rule of law requires an adequate opportunity to challenge decisions made by officials in the exercise of their legal powers. The animating idea of a contestatory conception of the rule of the law is that officials should relate to citizens in the space of reasons rather than merely through the exercise of power.