自然实验是理解现实世界中因果关系的强大工具。
Natural experiments are a powerful tool for understanding causal relationships in the real world.
How wonderful that we have met with a paradox. Now we have some hope of making progress.
你必须找到点燃你内心光芒的东西，这样你才能以自己的方式照亮世界。
In computational learning theory, we seek to understand the fundamental principles that govern learning from data.