The book investigates the inherent dangers of humanism as a dominant world philosophy, arguing that its reliance on human-centered logic threatens ecological and social stability. David W. Ehrenfeld, a biologist and conservationist, utilizes his background in ecology to challenge the assumption that human reason can solve all environmental and technological problems. He presents a framework that critiques the hubris of modern technological optimism and advocates for a more humble, systems-based approach to global challenges.

Critics and readers often note the provocative and challenging nature of Ehrenfeld's arguments against prevailing scientific optimism. Experts frequently cite this work as a foundational text for those interested in the intersection of environmental ethics and the philosophy of science.