So but the diary is a way to get more sophisticated information on individuals for dietary counseling purposes and the like, but it's pretty labor intensive and then it requires either a computer to analyze the diet or some human being who is trained in this to sit down and make sense of the data.

日记这个办法,可获得更加精确的个体信息,用以进行饮食咨询等,但这更像是劳动密集型工作,然后还需要一台电脑,来分析食物数据,有些人学的就是,坐在电脑前弄明白这些数据

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选