On effectiveness. It's not worth being efficient if you're not doing something effective, meaning that you must work toward your goal.

如果你不能保证做事的有效性，那么追求效率毫无意义，你必须向着目标努力。

youdao

And if you see the type of work you've been doing lately isn't something you want to continue doing, then you can get back on track to the direction you want to truly follow.

如果发现最近做的某种工作和你要继续做的不一样，那么可以回到你真正想要的追求的方向上去。

youdao

It was always something, and my decision was made on the whole work they have been doing, plus the Cosworth.

我一直在考虑这件事，我的决定是基于他们做的所有工作，当然还有考斯沃斯。

youdao

It was invented by a mathematician called Bellman. And he was at the time being paid by the Defense Department to work on something else. And he didn't want them to know what he was doing. So he made up a name that he was sure they would have no clue what it meant.

一点儿道理也没有,它是一个叫Bellman的数学家发明的,那时受聘于国防部研究一些其它东西,它不想让它们知道她在研究什么,所以它编造了一个,它们不会知道意义的词语。

麻省理工公开课 - 计算机科学及编程导论课程节选

Email is the same way: Work on a draft while doing something else, go back a time or two and voila!

CNN: An effusion on email

It's not something 'extra' they work on, but a more efficient way of doing what they already do.

CNN: Net-working: Can cyberspace help?