The authors review several case studies of children engaged in rule-governed play and conclude that the process of learning rules--and of breaking them and making new ones--promotes what they call gamesmanship. They link the development of gamesmanship to the theory of Machiavellian intelligence, which considers social interaction primary in the…

Food altruism and the consumption of food are examined from a sociological perspective which assumes that humans share food as inclusive fitness actors. Inclusive fitness implies the representation of an individual's genes in future generations through his own or others' offspring. The discussion includes characteristics of food sharing among kin…