Unanimity rule and the Pareto criterion appear so alike that several authors have treated them as almost interchangeable. Arrow (1951) described the Pareto principle as a unanimity principle. Fishburn (1973) refers to the Pareto criterion as strong unanimity. And Buchanan (1967, 285) described unanimity rule as the “political counterpart” of the Pareto criterion.
KeywordsPareto Optimality Pareto Improvement Unanimity Rule Pareto Principle Pareto Optimal Outcome
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