english: 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.
non_english: I deluje da koristimo naš jezik, ne samo da sarađujemo, već i da povlačimo granice među našim kooperativnim grupama i da izgradimo identitete, i možda da zaštitimo naše znanje i mudrost i veštine od prisluškivanja sa strane.