Diamond, Jared, Collapse 7 parts Jared Diamond compares the collapses of human societies over time and places with stressors occurring in present days. He looks at how the role of violence, turmoil, chaos, conflict, and class warfare emerge from shortages of water, food and energy. Warfare is a symptom not a cause of turmoil. Consumerism and its consequences of deforestation, desertification, mal…