Cause and effect below a certain level of definition is blurred.

在某种程度的定义的下的,因果关系是模糊的。

麻省理工公开课 - 固态化学导论课程节选

When it comes to humans, the notions of reward and punishment and so on that Skinner tried to extend to humans are so vague it's not science anymore.

说到人类，那些斯金纳试图应用于人类身上的,奖励和惩罚之类的概念,定义太过模糊,所以不能再当做科学来看待。

耶鲁公开课 - 心理学导论课程节选