This book takes a cross-cultural, cross-historical approach to the study of military deterrence. Political, economic, and geographic correlates are considered, particularly military and diplomatic strategy. Several hypotheses are tested and some are supported.

This study investigates the causes of creative florescences in certain time periods in certain societies. Wealth, geographical expansion, democratic support, and external challenge were not significant predictors of creative florescence, but political fragmentation shows a correlation with society’s creativity level.

This study takes an evolutionary approach to understanding cultural development. The author suggests that "the degree of regularity in the relative order of development of any two traits is directly proportional to the evolutionary distance between them." Scale analysis supports this proposition.

The authors assemble an inventory of burning practices based on cross-cultural ethnographic data in order to elucidate or provide interpretive range for burning patterns seen in the archaeological record. Although no explicit hypotheses are tested, descriptive generalizations are proposed.