The Obligation to Contribute to Discretionary Public Goods

The principle of fairness, first introduced by H. L. A. Hart in 1955, is able to support a workable theory of political obligation upon liberal premises. In a previous paper, 'Presumptive benefit, fairness, and political obligation', I argued that the principle can establish general obligations to cooperate in the provision of 'presumptive public goods' (that is, public goods that are indispensable to the typical member of society). Because a wider range of governmental services is necessary for the provision of presumptive goods, the principle also supports obligations to support 'discretionary public goods' (goods that are desirable but not indispensable). The 'indirect argument' developed in this paper counters the criticisms of my previous paper presented by A. John Simmons in 'The anarchist position: a reply to Klosko and Senor'.