You've got to decide, all right? This is, you can talk to your neighbors, you know do a little bit of thinking. And I'm going to give you ten seconds to figure this out, what your vote is for that.

你们不能弃权，你们必须选择，好吗？,你可以和你附近的同学讨论,简单思考一下，我给你们十秒钟想想，你选择什么。

麻省理工公开课 - 热力学与动力学课程节选