translation.en: This seems puzzling. But I'm going to argue that you shouldn't be surprised by this, and that to understand this you need to think about health the way than an economist does -- as an investment.
translation.zh: 这似乎很令人困惑，但我要说你不应该对此感到吃惊。 想要理解这个，你需要用经济学家的思维 来考虑有关健康的事 用一种投资的思想