Natural experiments are a powerful tool for understanding causal relationships in the real world.

"Writing is like making love. Don’t worry about the orgasm, just concentrate on the process."

人工智能的进展不仅仅是关于算法和数据，还涉及理解智能本身的本质。

世界是一本书，不旅行的人只读了一页。

我想一个平常人完全可以选择不平常。