What if the only natural advantage we had in the world was the fact that we could get together as a group, go out there on that African savanna, pick out an antelope, go out as a pack, and run that thing to death?
¿Y si nuestra única ventaja biológica fuera el hecho de que podemos, en grupo, salir a la savana africana, elegir un antílope y perseguirlo en grupo hasta que se muera?