当很清楚知道代码做什么，但是很难理解那些代码的时候就重写。

Rewrite when it is clear what the code does but it is difficult to understand.

youdao

当人们并不真正清楚自己在做什么时，试图精确把握干预的力度将是很难的。

Trying to calibrate the extent of intervention is going to be very hard when people don't really know what they are doing.

youdao

要处理有这么多根本性的突 破，很难决定下一步要做什么。

With so many fundamental breakthroughs to work on, he says, it's hard to decide what to do next.

youdao

You've got to put yourself in other people's shoes to figure out what they care about and what they're going to try and do, so you can respond well to that.

你要学会换位思考,去分析他们的收益是什么,他们要怎么做,并依此做出回应是很难的

耶鲁公开课 - 博弈论课程节选

Well what can you do? Well you can promise miracles, there's very little control over these sorts of things, you can distort the science, you can lie about what you do and nobody will come after you.

那么你会做什么呢,你可以承诺奇迹,这很难给予控制,你可以歪曲科学,你可以说谎,隐瞒你的作为,也没有人会找你麻烦

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选