Marshall Sahlins is one of the most well respected anthropologists in the field, the context of the book "Stone Age Economics" was to refute the popular misconceptions of hunter gatherers at the time (1960s-1970s) within the field. This book does not have much to do with modern theories within the field on hunter gatherers. It's usually added to introductory anthropology books to refute commonly held notions about hunter gatherers that students may have.