Thorough study of Morgan's contributions to the anthropological study of human kinship and Morgan's understanding of time. Morgan believed that he was civilized, while indigenous populations were somewhere between savagery and barbarism, but this ethnocentric view did not stop him from amassing a huge amount of information on global family systems. He proved that most of humanity uses only two possible models for organizing families. Considering Morgan had no computers in the 1860s — he relied entirely on letters from foreign missionaries — the enormity of this feat is impressive. One of my classmates called this the first "big data" project. Trautmann provides real insight into the significance of paleontology, Darwinian evolution, and geology in upsetting religious traditions. I disagree with Trautmann's claim that Darwin had only a minor influence on Morgan's thought. In my reading of Morgan, Darwin gave him extra justification for his theory of human social evolution. This book is for anthropologists, intellectual historians, and anyone interested in the history of philosophy, but not casual readers.