 Gauthier (1986) presents the social contract as a bargain between rational individuals who can gain through co-operating with one another, but who are competing over the division of the resulting surplus. He assumes that each is interested only in trying to maximise his own welfare, and he also assumes that there is a non-co-operative baseline from which the bargaining begins – so nobody would accept a solution that left her less well off than in the baseline condition. Each person can identify the outcome under which they fare best – their maximum gain – but they have no reason to expect others to accept that. Gauthier argues that rational bargainers will converge on the principle of Minimax Relative Concession, which requires each to concede the same relative proportion of their maximum possible gain relative to the non-co-operative baseline. Thus suppose there is a feasible arrangement whereby each participant can achieve two-thirds of their maximum gain, but no arrangement under which they all do better than that, then this is the arrangement that the principle recommends. Each person has made the same concession relative to the outcome that is best for them personally – not accepting the same absolute loss of welfare, let it be noted, but the same proportionate loss.