Justification to other people › The domain of what we owe

Suppose you promise a friend a lift and then receive a more enjoyable invitation. Keeping the promise has become inconvenient, but your friend has arranged the evening around your assurance. Saying that you would prefer to cancel does not yet explain why your friend should accept a principle allowing you to do so. The question is what reasons you can offer to someone whose plans you have helped shape.

That question gives us an entry into T. M. Scanlon's What We Owe to Each Other, published in 1998. Scanlon develops contractualism as an account of a central part of morality: the conduct we must be able to justify to other people. His proposal directs attention to principles that no one could reasonably reject, rather than treating actual agreement as the measure of rightness.

The proposal is easy to repeat and harder to use accurately. Reasonable rejection is not a personal veto. A principle must be compared with alternatives, and objections must be assessed as reasons. Understanding the view requires examining what principles permit, what they demand, and how their demands affect people occupying different positions.

Scanlon distinguishes what we owe to other people from morality understood more broadly. His contractualism is not meant to explain every kind of value. Appreciation of nature, artistic excellence and the goods of a worthwhile life raise questions beyond whether one person's conduct is justifiable to another. Recognizing those questions does not make the interpersonal domain unimportant; it makes the account's intended scope clearer.

Within that domain, the book addresses familiar requirements concerning assistance, harm, deception and assurances. These concern how we may treat one another. A theory of wrongness must explain both how we identify such requirements and why they give us reasons to act. Scanlon connects their authority to the value of standing in a relation of mutual justification.

That is broader than a negotiation over political institutions. An individual's conduct can owe a justification to someone even when no law or institutional arrangement is being negotiated. Equally, calling the theory contractualist does not mean that people first make a literal agreement that creates all their moral obligations. The contractual language identifies a form of justification.

This distinction matters for people who cannot bargain effectively. If an objection mattered only when its holder could secure a better deal, weakness would reduce moral standing. Scanlon's question concerns what someone could reasonably reject, rather than what they could force others to concede. A person's inability to punish wrongdoing does not make the reasons against mistreating them disappear.