The key to credible causal inference is not just the method, but how well the method fits the question at hand.
可信因果推断的关键不仅是方法，还有方法与当前问题的契合度。
When you have a good research design, the data can speak for itself.
当你有一个好的研究设计时，数据会自己说话。
Natural experiments are a powerful tool for understanding causal relationships in the real world.
自然实验是理解现实世界中因果关系的强大工具。
Good research is like a good story—it has a beginning, a middle, and an end, and it holds together logically.
好的研究就像好的故事——有开头、中间和结尾，逻辑连贯。
The most credible empirical research often comes from studies that have a clear and transparent design, where the assumptions are laid out for everyone to see.