The intent is to make sure that no one can discuss anything. The intent is to shout them down, to prevent intelligent discussion.

VOA: standard.2009.08.17

You need to come to discussion sections having thought about the lectures, having done the readings, having thought about the questions that they raise, and you need to come to discussion section then prepared to discuss this week's set of issues.

你需要去参与讨论给出自己的想法，去读阅读材料，去想他们提出的问题，并且你需要去讨论,然后准备去讨论这个星期的话题。

耶鲁公开课 - 死亡课程节选