@Marco_Piani Indeed that is curious isn't it. In the case of people doing sloppy work and getting things wrong "by accident", you would expect the conclusions to differ from reality in terms of policy implications in both directions, yet....
Small sample size but...
@Marco_Piani 确实很奇怪不是吗。在人们做事草率并“意外”出错的情况下，您会期望结论在两个方向的政策影响方面与现实有所不同，但是......
样本量小但...