comes from flawed reports of what people eat, because in order to know what people eat you have to ask them, and even if people are really trying hard to be truthful, it's not the easiest thing to do.

这些信息来自于关于人们饮食缺陷的报告,因为你必须询问人们,吃了什么,尽管人们会尽量实事求是,但这很难做到

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选