You mean I should keep these useless things at home.

你是说我应该把这些没用的东西留在家里。

youdao

Everything appears useless. Were you surprised at how few things have been proven to work?

你对于几乎没什么东西被证明能对感冒生效这点感到惊讶吗？

youdao

If a model cannot be trusted to tell you true things that you want to know about the software system that it represents, then it is worse than useless, since it can lead you to the wrong conclusions.

如果一个模式不能把它所表示的软件系统向你准确的表现出来，那么还不如不用模式，因为它可能会导致错误的结论。

youdao

Suppose you are like me, and once you fire up your laptop to check your email, you are in danger of spending the whole morning on the Net, doing increasingly useless things.

WSJ: How to Be a Better Procrastinator