How did John Rawls use the veil of ignorance to think about a just society?

In his landmark work, A Theory of Justice, John Rawls utilized the "veil of ignorance" as a heuristic device to determine the principles of a just society. While Rawls rejected the traditional state of nature as a pre-social historical condition, he adapted the social contract tradition by imagining a hypothetical "original position" of perfect equality.123

Behind the veil of ignorance, individuals are unaware of their specific social, economic, or historical circumstances, including their race, sex, religion, talents, intelligence, or personal goals. By stripping away this self-interested knowledge, Rawls argued that rational individuals would agree to principles that ensure fairness for all, rather than favoring specific groups.13

This process leads to two fundamental principles of justice:
* Equal Liberty: Every person has an equal claim to the most extensive set of basic rights and liberties compatible with the same scheme for all.13
* Social and Economic Equality: Inequalities are permissible only if they benefit the least-advantaged members of society and are attached to positions open to all under conditions of fair equality of opportunity.13

By removing the influence of personal advantage, the veil of ignorance serves as a moral tool to ensure that political and economic institutions are designed to protect the rights and interests of every citizen.13