因果推断的本质是超越数据，询问如果我们干预会发生什么。

To utter a performative is not to make a statement， and therefore the utterance of a performative is neither true nor false.

For in the final analysis, our most basic common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children's futures. And we are all mortal.

矿业社区应该得到的不仅仅是临时工作—他们应该得到可持续的未来。

The best fertilizer is the farmer's shadow on the field.