Amia Srinivasan in the NYT's the Stone:
In 1971 John Rawls published “A Theory of Justice,” the most significant articulation and defense of political liberalism of the 20th century. Rawls proposed that the structure of a just society was the one that a group of rational actors would come up with if they were operating behind a “veil of ignorance” — that is, provided they had no prior knowledge what their gender, age, wealth, talents, ethnicity and education would be in the imagined society. Since no one would know in advance where in society they would end up, rational agents would select a society in which everyone was guaranteed basic rights, including equality of opportunity. Since genuine (rather than “on paper”) equality of opportunity requires substantial access to resources — shelter, medical care, education — Rawls’s rational actors would also make their society a redistributive one, ensuring a decent standard of life for everyone.
In 1974, Robert Nozick countered with “Anarchy, State, and Utopia.” He argued that a just society was simply one that resulted from an unfettered free market — and that the only legitimate function of the state was to ensure the workings of the free market by enforcing contracts and protecting citizens against violence, theft and fraud. (The seemingly redistributive policy of making people pay for such a “night watchman” state, Nozick argued, was in fact non-redistributive, since such a state would arise naturally through free bargaining.) If one person — Nozick uses the example of Wilt Chamberlain, the great basketball player — is able to produce a good or service that is in high demand, and others freely pay him for that good or service, then he deserves to get rich.