Causal inference is not just about statistical significance; it's about understanding the mechanisms behind the numbers.

二叠纪盆地将在未来几十年内保持美国石油生产的皇冠地位。

Change starts with a vision, but it’s persistence that turns it into reality.

我认为我今天之所以成为我，是因为年轻时经历了那些艰难时期。