e of Science, SFI researcher Samuel Bowles and colleague Jung-Kyoo Choi of Kyungpook National University in South Korea suggest that the altruistic and warlike aspects of human nature may have a common origin.Altruism ??? benefiting fellow group members at a cost to oneself ??? and parochialism ??? hostility toward individuals not of one's own ethnic, racial, or other group ??? are common to human