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Benefits, Intentions, and the Principle of Fairness

In its simplest form, the principle of fairness tells us the following. If a number of people are producing a public good that we benefit from, it is not morally acceptable to free ride on their backs, enjoying the benefits without paying the costs. We owe them our fair share of the costs of the production of that good. The principle of fairness, defended by Rawls in A Theory of Justice and widely discussed subsequently, is sometimes invoked in various areas of applied ethics, such as environmental ethics, social ethics, etc. As it stands, the principle of fairness offers an account of a particular type of moral obligation that obtains if certain conditions are satisfied. For example, the good produced must be a particular type of good, the scheme in which it is produced must itself be fair, and so on. This account inspired a wave of discussions, which set the tone for the debate on the principle of fairness, about two decades ago.