The other thing you will find on the website are old homeworks, old exams, all sorts of resources, and they are videotaping this.

另一件你们能在网站上发现的是,以前的作业，以前的试题，各种的资源，他们正在这拍摄。

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So, for example, if you have a joint project that you're working on, perhaps it's a homework assignment, or perhaps it's a video project like these guys, that can turn into a Prisoners' Dilemma.

比如说你和别人要进行一个合作项目,可能是家庭作业,或者像他们正在进行的视频采集项目,它能变成一个囚徒困境

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