translation.en: And of course, our change in standards can outpace the change in behavior. One of the reasons violence went down is that people got sick of the carnage and cruelty in their time.
translation.zh: 当然，我们标准的变化超过了我们行为的变化。 暴力下降的众多原因之一 人们对他们那时的屠杀和残忍性已经厌倦了。