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.
Binatang lain, seperti mamalia sosial -- serigala, gajah,  ikan lumba-lumba, cimpanzi -- mereka boleh bekerja secara  lebih fleksibel, tapi hanya boleh buat secara  kumpulan kecil, kerana kerjasama antara cimpanzi adalah atas dasar pengetahuan yang  mendalam antara satu sama lain.