He says that students are no different from workers who take great pleasure in making fun of the boss behind his back, and that students 'comments, rather than being harsh invective, are mostly of a harmless nature, such as descriptions of the jokes professors tell in class. The whole phenomenon he ascribes to just plain old "human nature."
他比喻，員工最大的樂趣就是在背後說老闆的種種，學生也一樣，何況學生的反映不見得都是批評，大多時候只是傳誦老師上課鬧了什麼笑話的一些瑣事，說穿了就是「人的本性」。