Clearly, there must be major differences in the macroeconomic models used to produce such a wide range of estimates. But the one thing about which everyone seems to agree is the theoretically and empirically unjustified assumption that an equilibrium exchange rate actually exists.
他们的预测如此不同显然是因为他们所使用的宏观经济模型存在巨大差异。但是他们似乎都有一个共同点，就是在理论上和凭借经验主义不恰当地假设确实存在一个平衡的汇率。