Recently, I have been thinking about this problem more frequently, but when the original person is holding a spear, a pair of people will spread out to catch the animal, possibly using eyes, gestures, a simple monosyllable to exchange information, and later The group members each formed a group of predator prey, accustomed to using the same gestures to express the same hunting strategy, using language to exchange people's fear of the unknown, human beings have compassion, so when you kill the creature, you will feel the deterrent power of God.