The "Veil of Ignorance" is a philosophical concept introduced by John Rawls in his book "A Theory of Justice." It suggests that when designing a just society, individuals should imagine themselves behind a veil that prevents them from knowing their own social status, abilities, or personal characteristics. This encourages fairness, as decisions are made without bias toward one's own situation. By using the Veil of Ignorance, people are more likely to create rules and policies that benefit everyone, especially the least advantaged. This approach aims to ensure that justice is achieved by prioritizing equality and fairness over personal interests.