“…One natural idea is that the individual with the largest complaint has most reason to reject a principle. It then appears that a principle can be reasonably rejected only when the largest complaint is larger than the complaint anyone else could bring forward against any alternative principle.2 Recently Scanlonian contractualism has received scrutiny for the way it deals with cases where risks, rather than certainties of harm and benefit, are at stake.3 My discussion in this article will focus on Scan-1 See Gauthier,Practical Reasoning,Nagel,The Possibility of Altruism,Rawls, A Theory of Justice, [23][24][25][26]Nozick,Anarchy,State,and Utopia,[32][33]Nagel,Mortal Questions,ch. 8;and Nagel,Equality and Partiality,"Contractualism and Utilitarianism," and What We Owe to Each Other,ch.…”