Suppose they have a written contract, or even an unwritten contract, what enforces the contract for colluding firms or crooks in jail?

假如他们签了一份书面协议,或干脆口头的,他们怎么强制履行呢

耶鲁公开课 - 博弈论课程节选

How many of you have a written contract, stuck with a magnet on the fridge, telling you when you're supposed to tidy up.

有人写过协议吗,在冰箱上贴个磁力贴,规定好什么时候该谁打扫房间

耶鲁公开课 - 博弈论课程节选

That's what's written underneath it on the contract.

那就是合同下的伏笔。

耶鲁公开课 - 1945年后的美国小说课程节选

We have to realize that people don't read all the fine print and don't understand -if you have a precisely written contract in legal language, maybe they don't get it.

大众不愿阅读也无法理解,那些晦涩的法律条文,一份由法律术语写成的合同,对大众来讲无异于一部天书

耶鲁公开课 - 金融市场课程节选