translation.en: And so it seems that we use our language, not just to cooperate, but to draw rings around our cooperative groups and to establish identities, and perhaps to protect our knowledge and wisdom and skills from eavesdropping from outside.
translation.zh: 这样看来我们利用语言 不仅仅是为了合作 也是在集团周围划分界限 确立身份 也许是保护我们的知识，智慧和技能 以防落入外人之手