看不见的手之所以常常看不见，是因为它常常不存在。

The beauty of computational theory lies in its ability to abstract the complexities of the world into manageable and understandable models.

I don’t need a reason to be happy.

译文：女权不能让平庸的人占据，对于不同种族的人勾结在一起只能空自叹息。