A common objection to the idea of public reason is that it cannot resolve fundamental political issues because it excludes too many moral considerations from the political domain. Following an important but often overlooked distinction drawn by Gerald Gaus, there are two ways to understand this objection. First, public reason is often said to be inconclusive because it fails to generate agreement on fundamental political issues. Second, and more radically, some critics have claimed that public reason is indeterminate because it (...) cannot provide any citizen with sufficient reason(s) for making important political decisions. Against the first of these objections, I argue that the purpose of public reason is not to end reasonable disagreement. Rather, it is to provide a suitable framework of values and principles within which citizens may resolve their moral and political differences. Against the second objection, I argue, first, that the indeterminacy of public reason is much less common than its inconclusiveness; and, second, that there are second-order decision-making strategies that may enable citizens to cope with cases of indeterminacy. The incompleteness of public reason, whether it takes the form of inconclusiveness or indeterminacy, is not a reason for citizens to abandon their commitment to public justification. (shrink)

Since it appeared in 1971, John Rawls's A Theory of Justice has become a classic. The author has now revised the original edition to clear up a number of difficulties he and others have found in the original book. Rawls aims to express an essential part of the common core of the democratic tradition--justice as fairness--and to provide an alternative to utilitarianism, which had dominated the Anglo-Saxon tradition of political thought since the nineteenth century. Rawls substitutes the ideal of the (...) social contract as a more satisfactory account of the basic rights and liberties of citizens as free and equal persons. "Each person," writes Rawls, "possesses an inviolability founded on justice that even the welfare of society as a whole cannot override." Advancing the ideas of Rousseau, Kant, Emerson, and Lincoln, Rawls's theory is as powerful today as it was when first published. (shrink)

Though the revised edition of A Theory of Justice, published in 1999, is the definitive statement of Rawls's view, so much of the extensive literature on Rawls's theory refers to the first edition. This reissue makes the first edition once again available for scholars and serious students of Rawls's work.

A platitude that took hold with Kuhn is that there can be several equally good ways of balancing theoretical virtues for theory choice. Okasha recently modelled theory choice using technical apparatus from the domain of social choice: famously, Arrow showed that no method of social choice can jointly satisfy four desiderata, and each of the desiderata in social choice has an analogue in theory choice. Okasha suggested that one can avoid the Arrow analogue for theory choice by employing a strategy (...) used by Sen in social choice, namely, to enhance the information made available to the choice algorithms. I argue here that, despite Okasha’s claims to the contrary, the information-enhancing strategy is not compelling in the domain of theory choice. (shrink)

John Rawls's transition from A Theory of Justice to Political Liberalism was driven by his rejection of Theory's account of stability. The key to his later account of stability is the idea of public reason. We see Rawls's account of stability as an attempt to solve a mutual assurance problem. We maintain that Rawls's solution fails because his primary assurance mechanism, in the form of public reason, is fragile. His conception of public reason relies on a condition of consensus that (...) we argue is unrealistic in modern, pluralistic democracies. After rejecting Rawls's conception of public reason, we offer an ‘indirect alternative’ that we believe is much more robust. We cite experimental evidence to back up this claim. (shrink)

Kuhn’s famous thesis that there is ‘no unique algorithm’ for choosing between rival scientific theories is analysed using the machinery of social choice theory. It is shown that the problem of theory choice as posed by Kuhn is formally identical to a standard social choice problem. This suggests that analogues of well-known results from the social choice literature, such as Arrow’s impossibility theorem, may apply to theory choice. If an analogue of Arrow’s theorem does hold for theory choice this would (...) refute Kuhn’s thesis, but it would also pose a threat to the rationality of science, a threat that is if anything more worrying than that posed by Kuhn. Various possible ‘escape routes’ from Arrow’s impossibility result are examined, in particular Amartya Sen’s idea of ‘enriching the informational basis’. It is shown that Sen’s idea can be applied to the problem of theory choice in science. This in turn sheds light on two well-known approaches to inductive inference in philosophy of science: Bayesianism and statistical model selection. (shrink)

According to John Rawls's ideal of liberal public reason, comprehensive moral, religious and philosophical doctrines should play no more than an auxiliary or marginal role in the political life of constitutional democracies. David Reidy has recently claimed that since liberal public reason is incomplete, comprehensive doctrines, and non-public reasons, must play a wider role than Rawls admits. In response, I argue that Reidy's arguments do not establish that liberal public reason is incomplete. Furthermore, even if the substantive values embodied in (...) liberal public reason were insufficient to determine certain fundamental decisions, such indeterminacy need not be eliminated by recourse to comprehensive doctrines. (shrink)

Some philosophers have recently argued that decision-makers ought to take normative uncertainty into account in their decisionmaking. These philosophers argue that, just as it is plausible that we should maximize expected value under empirical uncertainty, it is plausible that we should maximize expected choice-worthiness under normative uncertainty. However, such an approach faces two serious problems: how to deal with merely ordinal theories, which do not give sense to the idea of magnitudes of choice-worthiness; and how, even when theories do give (...) sense to magnitudes of choice-worthiness, to compare magnitudes of choice-worthiness across different theories. Some critics have suggested that these problems are fatal to the project of developing a normative account of decision-making under normative uncertainty. The primary purpose of this article is to show that this is not the case. To this end, I develop an analogy between decision-making under normative uncertainty and the problem of social choice, and then argue that the Borda Rule provides the best way of making decisions in the face of merely ordinal theories and intertheoretic incomparability. (shrink)

I drive a wedge between public deliberation and public justification, concepts tightly associated in public reason liberalism. Properly understood, the ideal of public justification imposes no restraint on citizen deliberation but requires that those who have a substantial impact on the use of coercive power, political officials, advance proposals each person has sufficient reason to accept. I formulate this idea as the Principle of Convergent Restraint and apply it to legislators to illustrate the general reorientation I propose for the public (...) reason project. (shrink)

Why is it important for people to agree on and articulate shared reasons for just laws, rather than whatever reasons they personally find compelling? What, if any, practical role does public reason play in liberal democratic politics? We argue that the practical role of public reason can be better appreciated by examining the confluence of normative and positive political theory; the former represented here by liberal social contract theory of John Rawls and others, and the latter by rational choice or (...) game theory. Citizens in a diverse society face a practical as well as a moral problem. How can they have confidence that others will reciprocate their commitment to supporting governing principles that depart from their own ideal conceptions of truth and value in order to be reasonable to all? Citizens face a practical problem of mutual assurance that public reason helps them solve, and solve as a matter of common knowledge. The solution, on both views, requires citizens’ reciprocal commitment to basing law on a system of shared reasons. Both views place public reason at the core of liberal democratic politics in conditions of diversity, and for quite similar reasons. Our argument illustrates the complementary roles of positive and values-based analysis in constitutional design. (shrink)

The idea of public reason is at the center of John Rawls's political philosophy. Public reason is a standard by which we measure laws and political institutions. This chapter discusses the practice of public reason, the moral basis of public reason, and the challenge posed by religious critics of public reason. It provides three possible answers to the question: What is the moral basis for endorsing this particular conception of democratic politics – public reason? It is Rawlsian concept of justice (...) – the ideal of a fair system of social cooperation between free and equal citizens – which provides the moral basis for public reason. Given this basis, citizens then engage in the practice of public reason with one another. (shrink)

John Rawls’s most mature notion of political order is “stability for the right reasons.” Stability for the right reasons is the kind of political order that Rawls hoped a well-ordered society could ideally achieve. In this paper, I demonstrate through the tools of modern game theory, the instability of “stability for the right reasons.” Specifically, I will show that a well-ordered society can completely destabilize by the introduction of an arbitrarily small number of non- compliers whenever individuals fail to achieve (...) full common knowledge ever so slightly. (shrink)

In a recent article, Okasha challenges Kuhn’s claim that there is no ‘neutral’ algorithm for theory choice. He argues using Arrow’s ‘impossibility’ theorem that — except under certain favourable conditions concerning the measurability and comparability of theoretical values — there are no theory choice algorithms at all, neutral or otherwise. But Okasha’s argument does not apply to important theory choice problems, among them the case of Copernican and Ptolemaic astronomy that much occupied Kuhn. The reason is that Kuhn’s choice criteria (...) can rank rival theories in only a few ways, which makes the analogue of Arrow’s domain assumption inappropriate. It is hard to see any consequences for Kuhn’s claim, or threat to the rationality of science. (shrink)

Public reason liberalism is a family of theories according to which liberal political institutions, social structures, and/or basic social rules are politically or morally justified if and only if they can be endorsed from the perspective of each and every free and equal "reasonable and rational" person. Let us call these persons "the members of the justificatory public." Public reason liberalism idealizes the members of the justificatory public in three senses. First, the members of the justificatory public are assumed to (...) be free from at least some of the cognitive distortions and biases that often characterize actual people; we suppose that they generally reason in a sound way on the basis of relevant information. Different versions of public reason liberalism press this idealization quite far, while others insist on a "moderate idealization." Secondly, the members of the justificatory public are idealized insofar as it is assumed that each is a good-willed person, concerned with living with others on terms that are mutually acceptable. In Rawls's language, we suppose that they are not simply rational, but "reasonable": they have a form of "moral sensibility" according to which they are ready to propose fair terms of cooperation, and are willing to abide by them "provided others can be relied on to do likewise." The members of the justificatory public are thus idealized insofar as they are assumed to be moved by their sense of justice, or their aim to respect others as free and equal persons. This leads to a third idealization: by assuming that the members of the justificatory public are moved by this moral sensibility, it is supposed that they do not pay attention to their reasons to ignore their sense of justice . More generally, any specific version of public reason liberalism will hold that some reasons of actual people are not relevant to the justificatory question: the members of the justificatory public "bracket" these reasons in their deliberations. (shrink)