The core message of this book by Nobel prize-winners is that current macro studies of developmental theories and practices increasingly make us “emptier” since most theories, being generalized evaluations in studies in poverty reduction and upward social mobility, fail to examine context-based verifications and evidence. This work, written with sound care, conforms to the findings of another Nobel Laureate, Angus Deaton of Harvard, who has cautioned that field experiments should be designed carefully to shed light on why a method worked and where else it might work. In the same vein, this book argues, for example, that remedial instruction in India had measurable benefits for weaker students, but further studies demonstrated that remedial education seemed to be unworkable as resources varied.

中文翻译：

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困难时期的良好经济学

诺贝尔奖获得者这本书的核心信息是，当前对发展理论和实践的宏观研究越来越让我们“空虚”，因为大多数理论，在减贫和向上的社会流动研究中的概括评估，未能检验基于情境的验证和证据。这份精心撰写的工作符合另一位诺贝尔奖获得者、哈佛大学的安格斯·迪顿 (Angus Deaton) 的发现，他警告说，应仔细设计现场实验，以阐明一种方法为何有效以及它在其他地方是否有效。同样，本书认为，例如，印度的补习教学对较弱的学生有明显的好处，但进一步的研究表明，由于资源的变化，补习教育似乎行不通。