What Marshall Didn't Know: On the Twentieth Century's Contributions to Economics*
指出二十世纪经济学的重要贡献不仅包括宏观经济学、计量经济学和博弈论，更在于数据丰富和方法改进带来的实证研究增强，以及应用经济学在公共财政、监管、公司金融等领域的严谨性提升，与马歇尔时代形成鲜明对比。
Some of this century's many valuable contributions to economics, like macroeconomics, econometrics, and game theory, are widely recognized. However, arguably equally important is the enhanced role of empirical study permitted by more abundant data and improved methods. Also insufficiently recognized are the increased rigor and use of applied economics in public finance, regulation, corporation finance, etc., employing abstract theory and sophisticated data analysis. The striking contrast with earlier intuitively based applied economics and empirical study is illustrated. Comparison with Marshall's <it>Principles</it> also indicates that, except for macroeconomics, remarkably little space in today's texts deals with some ofthe rich contributions ofthis century.