In our zeal to display the profession’s crown jewels in untarnished form – market efficiency, the invisible hand, comparative advantage – we skip over the real-world complications and nuances, well recognized as they are in the discipline. It is as if introductory physics courses assumed a world without gravity, because everything becomes so much simpler that way.
本科生水平的经济学教学也受到了相同问题的困扰。我们热切地希望展示经济学皇冠上尚未失去光泽的宝石——市场有效性、看不见的手、比较优势——与此同时，我们忽略了真实世界的复杂和微妙之处，而这些东西是公认的经济学内容。这就好比是物理学概论假设世界万物极其简单以至于没有重力。