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