A classic thought experiment

The Veil of Ignorance

The Veil of Ignorance asks people to choose principles for society without knowing which social position, abilities, aims, or generation they will occupy.

Questions hidden inside

  • Which rules would you accept if you did not know whether they would advantage or disadvantage you?
  • What information should be hidden to make a choice fair, and what general knowledge must remain?
  • Does impartial choice favor equality, priority for the least advantaged, average welfare, or another principle?

Philosophical lenses

Fairness

Can principles be chosen without tailoring them to one's position?

The veil removes knowledge that could invite bargaining for personal or group advantage while retaining general facts needed for social choice.

Risk

How should choosers respond to uncertainty about their position?

Different attitudes toward risk can support different principles, making the reasoning of the parties as important as the information they lack.

Institutions

What is being selected?

Rawls uses the device to choose principles for the basic structure of society, not to decide every isolated personal distribution.

Begin with a choice

Without knowing your future social position, which principle would you give the greatest priority?

The scenario

Imagine representatives choosing the main principles that will govern social institutions. They know general facts about economics, psychology, scarcity, cooperation, and social life, but they do not know their own class, wealth, talents, health, social identity, ambitions, or generation.

This information barrier is the veil of ignorance. Because no one can design principles for a known personal position, the parties must choose rules they can accept across the range of positions they might occupy.

What the experiment is for

The device models fairness by limiting the influence of morally arbitrary advantages. It asks what principles free and equal persons would choose when none can exploit knowledge of their own bargaining position.

Rawls applies the choice to the basic structure of society: major institutions that distribute rights, opportunities, income, wealth, and the conditions of social cooperation. The exercise is not simply a command to divide every good equally.

What Rawls argues

Rawls argues for equal basic liberties, fair equality of opportunity, and a principle permitting social and economic inequalities only under conditions that include benefit to the least advantaged. The principles have an ordering that prevents ordinary gains from purchasing the loss of basic liberty.

The reasoning depends on how the original position is specified, including what the parties know, what interests they represent, and why they would reject some risks. The veil alone does not mechanically generate one conclusion.

Possible principleReason behind the veilCentral objection
Equal basic libertiesNo one knows which beliefs, aims, or minority position they will holdDisagreement remains about which liberties are basic and how conflicts are resolved
Priority to the least advantagedAnyone could occupy a severely disadvantaged positionThe rule may be too cautious or difficult to operationalize
Average welfareEach person may reason from expected social benefitSome individuals could bear severe losses for aggregate gains
Strict equalityIt prevents distributive advantage based on arbitrary positionSome inequalities may improve opportunity or everyone's condition

Objections, limits, and extensions

Critics question whether the parties are too abstract, whether the device embeds particular assumptions about rationality and risk, and whether one hypothetical agreement can represent people with diverse relationships, histories, disabilities, and forms of dependence.

The veil can also be extended to generations by hiding when a chooser will live. That extension highlights long-term stewardship and just savings, but it leaves open how present needs, uncertainty, and obligations to differently situated future people should be balanced.

  • Ask which facts are hidden and which general facts remain available.
  • Distinguish choosing social principles from allocating one isolated benefit.
  • Compare impartiality with perspectives grounded in care, history, or actual exclusion.
  • Test whether a changed probability of advantage alters the supposedly fair choice.

Change one fact

Should this probability change the principles you regard as fair?

Your earlier choice: Choose principles without knowing which social position you will occupy.

What changed: You learn that you have a ninety percent chance of occupying one of the most advantaged positions.

Continue with justice, autonomy, value.

Continue with Ada

Professor Ada Rowan

Test an idea or objection

Compare perspectives, test an assumption, or develop an objection using this reviewed page as context.

Related paths

Sources

  1. A Theory of Justice: Revised Edition — John Rawls (1999)

    Rawls’s revised presentation of justice as fairness, the original position, the veil of ignorance, equal basic liberties, fair equality of opportunity, the difference principle, and duties between generations.

    View source
  2. Justice (2026)

    Current survey of justice as a virtue of persons, a property of institutions, and a demand concerning distribution, recognition, procedure, and rectification. It provides a neutral framework for comparing competing theories without assuming that justice means only equality or only desert.

    View source
  3. Intergenerational Justice (2026)

    Current survey of duties and claims across generations, including savings, natural resources, climate change, population choices, democratic representation, discounting, and the standing of people who do not yet exist.

    View source

Last modified 2026-07-30. Reviewed by Thinking Paths editorial team.