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The key to credible causal inference is not just the method, but how well the method fits the question at hand.

能源的未來不是非此即彼的選擇，而是在傳統能源和新能源之間找到適當的平衡。

Legal rules are not merely commands backed by threats; they are also rules that confer powers and create obligations.

我們只是五個喜歡唱歌和表演的人。

"Books are the keys to understanding ourselves."