这是一门关于什么公正的课程。我们先讲一个故事This is a course about justice. We begin with a story.设想你是一位电车司机Suppose you're the driver of a trolley car你的电车正已每小时60英里行驶Your trolley car is hurtling down the track at 60 Mph.你发现，在车轨的尽头有5位工人在那里干活At the end of the track, you notice five workers are working on the track.你想尽办法停下来，但已经停不住了You try to stop, but you can't你的手刹不灵了your brakes don't work你感到十分绝望，因为你知道You feel desperate, because you know