translation.en: What I didn't know, in fact, was what rules in their behavior the meerkats follow for this change at the edge of the group to happen and if simple rules were sufficient to explain it.
translation.zh: 事实上我不知道的是， 这些猫鼬遵循了什么样的行为规则， 可以使群体的边缘发生这样的变化， 而且，是否用简单的规则就足以解释它。