Abstract

IntroductionIssues in public policy have been challenging and remaking moral theory for two centuries. Such issues force us to question fundamental principles of ethics while they cast doubt on our ability to generalize from traditional intuitions. No issue poses more remarkable difficulties for moral theory than nuclear weapons policy. Because the consequences of their deployment and therefore possible use could be grievous beyond those of any previously conceivable human action, these weapons frame the conflict between outcome-based, especially utilitarian, and action-based deontological moral theories more acutely than perhaps any other we have faced. Just because nuclear weapons may bring about the most grievous outcome imaginable, they elevate concern with outcomes over concern with actions. More generally, they wreak havoc with the focus on the morality of individual choices and actions, set limits to the notion of intention and the doctrine of double effect, call into question the so-called just-war theory, and overwhelm the intuitionist basis of much of ethical reasoning.