The real Lord Keynes was the editor of a series of interwar elementary guides to economic ideas, which had a common introduction edited by the master. For most of these volumes, the introduction merely stated that economics was not a fixed body of ideas but a way of thinking which the reader should try to apply to problems. But in the last few guides the introduction was changed a great deal. He remarked that economics was in a period of turmoil, which until it was resolved, had virtually destroyed its application to policy. He modestly refrained from saying who was responsible for this turmoil.
现实中的凯恩斯勋爵(Lord Keynes)曾在两次世界大战之间那段时期作过一系列manbetx20客户端下载 思想入门书籍的编辑，并为这些书籍编写了共用的序言。就其中大多数书籍而言，序言部分表达的意思只有一点：manbetx20客户端下载 学并不是一个固定的思想架构，而是一种思维方式，读者应努力运用这种思维方式来解决问题。但在最后出版的几本入门书籍中，序言内容发生了很大的变化。凯恩斯在其中提到，manbetx20客户端下载 学正处在一个混乱的时期，在这一混乱被理清之前，manbetx20客户端下载 学几乎已不再适合应用于政策领域。他相当谨慎，没有说明谁应对这一混乱负责。