There are really two purposes in us doing this: one was so you can get a fix on your own eating, and second you can see the challenges that are involved in assessing what people eat when you start doing studies linking diet to health.

这么做实际上有两个目的,一是你可以调整你自己的饮食,二是当你开始研究,饮食与健康的关系时,你会发现,在对人们吃什么进行评估时存在很多困难

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选