You can take a problem that might be relatively intuitive to solve but when you scale this thing up as is increasingly the case in the web, in large data systems, and so forth, you actually have to now think smart, you actually have to think efficiently and you have to solve this problem effectively.

你可以把一个问题用比较直观的方法解决,但如果你把此类问题的数量增大,正如越来越多的互联网，和大规模数据系统中出现的问题等等,你应该考虑怎样才能更简便，怎样才能更高效,你应该用行之有效的方法处理问题。

哈佛公开课 - 计算机科学课程节选

Even if the research doesn't always communicate good news, it's about communicating what works, what is real, as opposed to our dreams , our desires, our hopes, our wishes-- that's not enough.

即使研究并非总是传达好消息，它传达的是行之有效的方法，可为的方式而不是空洞的梦想，渴望，希望，愿望-,那远远不够。

哈佛公开课 - 幸福课课程节选

They would pull out your entire life history of contributions-- they had it because you had filed it all at the post office and everything was bureaucratic and efficient-- and they calculated, according to a formula, what you would get.

政府会取出你这一生的交保记录-,这是由你自己在邮局填写的,所有的一切都行之有效-,然后他们根据公式计算你能得到养老金。

耶鲁公开课 - 金融市场课程节选

Things that actually work, good stuff.

行之有效的好东西。

哈佛公开课 - 幸福课课程节选