FACT: Among the slaughtered remains found in the Drakensberg Mountains is a now-extinct giant buffalo Pelovoris antiquus, which weighed almost 2000 kilograms and whose modern-day (smaller) descendant is one of the most dangerous game animals in Africa (Milo1998).
A Cooperative Species:
Human Reciprocity and Its Evolution
by Samuel Bowles & Herbert Gintis
In A Cooperative Species, Samuel Bowles and Herbert Gintis—pioneers in the new experimental and evolutionary science of human behavior—show that the central issue is not why selfish people act generously, but instead how genetic and cultural evolution has produced a species in which substantial numbers make sacrifices to uphold ethical norms and to help even total strangers.
Using experimental, archaeological, genetic, and ethnographic data to calibrate models of the coevolution of genes and culture as well as prehistoric warfare and other forms of group competition, A Cooperative Species provides a compelling and novel account of how humans came to be moral and cooperative.
“Bowles and Gintis stress that cooperation among individuals who are only distantly related is a critical distinguishing feature of the human species. They argue forcefully that the best explanation for such cooperation is altruism. Many will dispute this claim, but it deserves serious consideration.”—Eric Maskin, Nobel Laureate in Economics
We invite you to read Chapter 1 here: http://press.princeton.edu/chapters/s9474.pdf