可信因果推断的关键不仅是方法，还有方法与当前问题的契合度。

一个公司的强大程度取决于为其工作的人。

You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself. That is something you have charge of.

认证计划是负责任林业实践的底线，而不是上限。