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次优理论认为 ,微观经济政策实施所造成的满足多条件的状态并不能比满足较少条件的状态更接近于帕累托最优状态。运用次优理论对贸易政策分析的结论是 :无论存在失业成本 ,还是为保护幼稚产业 ,生产补贴这些直接指向市场扭曲本身的政策都比关税保护更优
The suboptimal theory holds that the state that meets the multiple conditions caused by the implementation of microeconomic policies can not be closer to the Pareto optimality than the state that meets the less favorable conditions. The analysis of trade policy using the second-best theory concludes that policies that directly point to market distortions themselves are better than tariff protection, regardless of the cost of unemployment or the protection of infant industries