translation.en: CA: We've evolved to get all excited about these dramatic attacks. Is that because in the past, in the ancient past, we just didn't understand things like disease and systems that cause poverty and so forth, and so it made no sense for us as a species to put any energy into worrying about those things?
translation.zh: CA： 我们变得对待恐怖袭击时 会非常激动。那是因为 在很久以前，我们还不知道是疾病 和其他种种原因导致了贫穷， 所以我们这个物种并没有 投入太多精力 去担心这些事情？