Now, for those of you who have read Mill already, how, according to him, is it possible to draw that distinction?

现在，已经读过穆勒名著的同学，来说说他是怎样对此进行区分的？

耶鲁公开课 - 公正课程节选

And in fact, an example of a methodological attempt was done by Henry Gleitman at University of Pennsylvania, who built a tickle machine, which was this box with these two giant hands that went "r-r-r-r."

实际上,宾夕法尼亚大学的亨利·葛雷曼,曾经进行过研究方法上的尝试,他发明了一台挠痒痒的机器,这是一个装有两只大手的箱子,双手会不停的去挠痒痒

耶鲁公开课 - 心理学导论课程节选