—— 请按键盘 空白键 开始游戏 ——

随机实验是因果推理的黄金标准,但它们并不总是可行的。
"Randomized experiments are the gold standard for causal inference, but they are not always feasible."
Love is the most powerful force in the world.
The essence of art is to reveal the hidden.
The most effective policies are often the simplest ones.