Other animals, like the social mammals -- the wolves, the elephants, the dolphins, the chimpanzees -- they can cooperate much more flexibly, but they do so only in small numbers, because cooperation among chimpanzees is based on intimate knowledge, one of the other.
Makhluk lain, seperti kawanan mamalia -- serigala, gajah, lumba-lumba, simpanse -- mereka dapat bekerja sama secara lebih fleksibel, namun mereka hanya dapat melakukannya dalam kelompok kecil, karena kerja sama antara simpanse didasarkan pada pengetahuan mendalam antara satu sama lain.