Pareto efficiency

An allocation is Pareto efficient when no one can be made better off without making someone else worse off.当在不使其他人境况变坏的前提下无法使任何人境况变得更好时，资源配置就是帕累托有效的。

Competitive markets tend to produce Pareto efficient outcomes under idealised conditions.在理想条件下，竞争市场倾向于产生帕累托有效的成果。