We all agree that democratic decision-making requires a factual input, and most of us assume that when the pertinent facts are not in plain view they should be furnished by well-functioning scientific institutions. But how should liberal democracy respond when apparently sincere, rational and well-informed citizens object to coercive legislation because it is based on what they consider a misguided trust in certain parts of science? Cases are familiar, the most prominent concerning climate science and evolution, but one may also (...) count GMO-skepticism and vaccine-skepticism, and there are plenty of others. The paper defends what I, borrowing an expression from Badiola, call Science as Public Reason, asserting roughly that some policy-relevant factual proposition P is part of public reason if and only if there is consensus about P among scientific experts in the relevant well-functioning scientific institutions. I defend this view against the controversiality objection claiming that scientific findings cannot in this general way pass as public reason as they are sometimes controversial among reasonable citizens. My preferred line of defense is what I call Dogmatism about Science as Public Reason, which roughly amounts to insisting on Science as Public Reason on the ground that it is a philosophically well-motivated view, while conceding that it may not be acceptable to all minimally rational and well-informed individuals. (shrink)

The ‘convergence conception’ of political liberalism has become increasingly popular in recent years. Steven Wall has shown that convergence liberals face a serious dilemma in responding to disagreement about whether laws are publicly justified. What I call the ‘conjunctive approach’ to such disagreement threatens anarchism, while the ‘non-conjunctive’ approach appears to render convergence liberalism internally inconsistent. This paper defends the non-conjunctive approach, which holds that the correct view of public justification should be followed even if some citizens do not consider (...) enacted laws to be publicly justified. My argument sheds light on the fundamental structure of convergence liberalism. (shrink)

Explains the concept and conceptions of public justification found in the philosophy and political theory literatures.

How should the state justify its coercive rules? Public reason liberalism endorses a public justification requirement: Justifications offered for authoritative regulations must be acceptable to all members of the relevant public. However, as a criterion of legitimacy, the public justification requirement is epistemically unreliable: It prioritizes neither the exclusion of false beliefs nor the inclusion of true beliefs in justifications of political rules. This article presents an epistemic alternative to the public justification requirement. Employing epistemological theories of argumentation, we demonstrate (...) how this approach enables assessing the epistemic quality of justifications of political rules, even when the truth is difficult to establish. (shrink)

Mainstream political liberals hold that state coercion is legitimate only if it is justified on the grounds of reasons that all may reasonably be expected to accept. Critics argue that this public justification principle is self-defeating, because it depends on moral justifications that not all may reasonably be expected to accept. To rebut the self-defeat objection, I elaborate on the following disjunction: one either agrees or disagrees that it is wrong to impose one’s morality on others by the coercive power (...) of the state. Those who disagree reject PJP, they understand politics as war. Those who agree accept PJP, they understand politics as competition. Political competitors abide by PJP to avoid politics as war, by enforcing PJP on political combatants they engage in a war that is unavoidable. In both cases their exercise of political power has a justification that is reasonably acceptable to all. (shrink)