 At the time when Arrow declared social choice to be impossible, Nash (1950) published a possibility theorem for the bargaining problem, which is the problem of finding an option acceptable to two parties, among a subset of alternatives. Interestingly, Nash relied on the axiomatic analysis just like Arrow, so that both can be given credit for the introduction of this method in normative economics. In the same decade, a similar contribution was made by Shapley (1953) to the theory of cooperative games. The development of such approaches has been impressive since then, but some questioning has emerged regarding the ethical relevance of this theory to issues of distributive justice.