translation.en: But if we turn to evolution for an answer to this puzzle of why we spend so much time taking care of useless babies, it turns out that there's actually an answer.
translation.zh: 如果我们从进化的角度 来寻找 我们为什么要花这么多时间 来照料这些没用的宝宝们的答案时， 我们找到了一个答案。