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Right now, it doesn't make sense to me. It says: Strong Pareto Optimum is ""a movement from one allocation to another that can make at least one individual better off"" and a ""Weak Pareto Optimum (WPO) satisfies a less stringent requirement, in which a new allocation is only considered to be a Pareto improvement if it is strictly preferred by all individuals"". Surely being strictly preferred by all individuals is a more stringent outcome than being strictly preferred by one individual? Or am I misunderstanding what strictly preferred means?
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