Finally, the Stability Argument justifies the doctrine of public rules on the grounds that its acceptance enhances “the long-term probability of a society conforming with its conceptions of justice” (Williams 1998: 244). Again, this instrumental argument relies upon the alleged psychological fact that citizens are more likely to support principles and institutions that they perceive as just (Rawls 1996: 140–4). This supports the doctrine of public rules insofar as citizens are more likely to perceive principles and institutions as just when the demands of justice are sufficiently determinate and accessible, and compliance with them is sufficiently verifiable to others (for objections: Caney 1995; Lippert-Rasmussen 2008: 45–46).