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."
The search for understanding the universe is a journey that never ends.
当我们自由行动时，为了行动本身而不是为了其他动机，我们学会变得比我们原来更多。
The beauty of science is that it allows us to see the world not as it is, but as it could be.
Enterprises must be adept at utilizing capital markets to provide financial support for innovation.