"Randomized experiments are the gold standard for causal inference, but they are not always feasible."

The beauty of cinema is that it allows us to explore the depths of human emotion and experience in a way that no other art form can.

我一直对转变的想法着迷。

饥饿了就想吃饭，寒冷了就想温暖，疲劳了就想休息，爱好利益而厌恶祸害，这是人生下来就具有的本性。