And I just think that it's interesting that the idea of using real-world crashes, which is very much something that economists think would be the right thing to do, is something that scientists don't actually, usually think -- they would rather use a laboratory, a very imperfect science of looking at the dummies, than actually 30 years of data of what we've seen with children and with car seats.
我只是觉得，（这个研究手段的差异）很有趣： 使用真实事例， 对于经济学家来说是理所当然的， 却是科学研究工作者们选择不去做的 — 科学家们宁愿作实验， 用问题百出的实验科学，就像我们使用假人做研究， 而不用三十年来我们看到的， 关于儿童（安全）和汽车安全座椅的真实数据。