...themselves for the group. As Snell (1988: 208) reminds us, Charles Darwin wrote in The Descent of Man, "When two tribes of primeval man, living in the same country, came into competition, if... the one tribe included a great number of courageous, sympathetic and faithful members, who were always...

...himself recognized, social animals can often benefit themselves through cooperative effort with others. "When two tribes of primeval man, living in the same country, came into competition, if the one tribe included (other circumstances being equal) a greater number of courageous, sympathetic,...

...himself recognized, social animals can often benefit themselves through cooperative effort with others. "When two tribes of primeval man, living in the same country, came into competit ion, if the one tribe included (other circumstances being equal) a greater number of courageous,...

...individual organism, came as close as he ever came to group selectionism in his discussion of human tribes: When two tribes of primeval man, living in the same country, came into competition, if the one tribe included (other circumstances being equal) a greater number of courageous, sympathetic,...

...competition is seen as between "tribes" or communities, rather than as among individuals of the same group: "When two tribes of primeval man, living in the same...competition, if (other circumstances being equal) one tribe included a great number of courageous, sympathetic, and faithful members, who were always...

...14. WD Hamilton, 'The Genetical Evolution of Social Behavior', 7 J. Theoretical Biology 1 (1964). 15. 'When two tribes of primeval man, living in the same country, came into competition, the tribe including the greater number of courageous, sympathetic, and faithful members would succeed...