This article provides a critical introduction to contractualism as a moral or ethical theory, that is, as a theory of the rightness and wrongness of individual conduct – focusing specifically on the influential 'Kantian' version of contractualism due to T. M. Scanlon. I begin by elucidating the key features of Scanlon's contractualism: justifiability to others; reasonable rejectability; the individualist restriction; and mutual recognition. I then turn to discuss both its appeal and the main objections that have been raised to it (...) – objections concerning our duties to the cognitively limited and impaired, aggregation, demandingness, normativity and explanatory adequacy. I conclude by mentioning some contractualist alternatives to Scanlon's theory. (shrink)

Contractualists characterize morality as fundamentally concerning how people relate to one another. Insofar as someone treats others in a way that they can accept, her actions are permissible. If someone’s actions cannot be justified to others, she acts wrongly. By relying on this idea of justifiability to others, contractualists can account for the wrongness of acts by appealing to a wide variety of reasons. For instance, contractualists can explain why murder is wrong by appealing to the death of innocents and (...) explain the wrongness of plagiarism in terms of the importance of authenticity and originality. Someone can reasonably reject letting people act on principles that allow murder or plagiarism, at least in part, for those reasons. While this flexibility is a strength of contractualism, it also complicates explaining how the fact that an act is wrong itself provides a reason against doing it. Put differently, if the death of innocents explains the wrongness of murder, why take the .. (shrink)