This View of Life: Completing the Darwinian Revolution ↑

Between-group selection became the primary evolutionary force

Our ancestors found ways to suppress disruptive competition among individuals within groups, so that between-group selection became the primary evolutionary force. This favored group-level coordination in all its forms, including the transmission of learned information across generations.

David Sloan Wilson, 2019, from the book This View of Life: Completing the Darwinian Revolution