They expect 2 - 1 = 1 and when 2 - 1 = 2 or 3 or 0, they look longer, indicating surprise.

它们认为2-1=1,所以当2-1=2或3或0,他们注视时间更长,表明了惊奇

耶鲁公开课 - 心理学导论课程节选

Why should citizens of one state, namely one's own have any moral priority over the citizens of another state when, again, we don't know them and we may well be mistaken in our assumption ? that they are enemies or friends?

为何一国的公民，即为何某人能拥有,凌驾其它城邦公民的道德优势,尤其是我们根本不了解他们,我们可能误将他们,错认为是敌人或朋友？

耶鲁公开课 - 政治哲学导论课程节选