Betrayals forced ancient humans to migrate

Betrayals forced ancient humans to migrate

Betrayals of trust resulting from moral disputes forced early humans to cross major geographical barriers, including deltas such as the Indus and the Ganges, and spread across the world about 1,00,000 years ago, a new study has found.
Penny Spikins from the University of York said before that movement of archaic humans were slow and largely governed by environmental events due to population increases or ecological changes. Researchers suggest that as commitments to others became more essential to survival, and human groups ever more motivated to identify and punish those who cheat, the `dark’ side of human nature also developed. Moral disputes motivated by broken trust and a sense of betrayal became more frequent and motivated early humans to put distance between them and their rivals.
Larger social networks made it easier to find distant allies with whom to start new colonies, and more efficient hunting technology meant that anyone with a grudge was a danger but it was human emotions which provided the force of repulsion from existing occupied areas which we do not see in other animals.
Early species of hominin were limited in distribution to specific environments such as grasslands and open woodland.
After 100,000 years ago, dispersal into dis ant, risky and inhospitable areas became relatively more common. (PTI)