translation.en: I'm not even telling you the story because I think we should be running more carefully controlled randomized trials in all aspects of public policy, although I think that would also be completely awesome.
translation.zh: 我跟你说这个故事也不是 因为我认为我们应该更小心地 随机抽样试验。 在公共政策的各个方面 虽然我觉得这样做完全会很好。