ABSTRACT
The beneficial effects of universal Suñay only become evident after herd dynamics are simulated for up to 100 model years. This chapter assumes that a few herders had always extended Suñay to non-kin, if only to provide selection with something to work on. It considers ways in which the frequency of cooperation with non-kin could show an initial increase, even if slight, without assuming that herders had any insight into its long-term benefits. The chapter refers to the Boyd-Richerson theory from time to time throughout this study, but without tying people's results to any of their specific models. It links people's work directly to one of their models for 'frequency-dependent bias and the evolution of cooperation'. Boyd and Richerson go on to develop a theory of cultural inheritance often expressed in algebraic equations analogous to those of population genetics to account for individual behaviors that favor groups, even groups including unrelated individuals.
