Law uses a crude methodology to deal with extremely difficult questions. The crudeness is concealed when no other inquirers have a powerful methodology, and now they do, thanks to advances in natural and social science.
A naturalistic theory of economic organization J.W. Stoelhorst/Peter J. RichersonThe puzzle of human cooperative behavior is a crucial step in the development of a naturalistic approach that can bridge the gap between biology and the social sciences… The explanatory logic that has emerged to explain the evolutionary origins of our unique cooperative capabilities is based on a combination of multi-level selection theory and the theory of gene-culture co-evolution. In multi-level selection theory, groups as well as individuals are units of selection. The theory distinguishes the selection pressures from within-group competition for scarce resources, which favor behavior that is beneficial to the individual, and between-group competition for scarce resources, which favor behavior that is beneficial to the group. Whenever individuals are organized into groups that compete with each other, the net effect of these two selection pressures may favor cooperative behaviors that are beneficial to the group. Although the evolution of cooperation on the basis multi-level selection acting on genetic evolution alone is possible, the explanatory value of the multi-level selection framework is much increased if, in addition to genetic mechanisms, we allow cultural mechanisms to play a role as well.