### Symbiosis 1. Expands "Survival of the Fittest": Wilson is a leading proponent of the idea that [[Evolution]] acts on multiple levels—not just on [[Genes]] and individuals, but also on groups. [[Symbiosis]] is a stunning example of this. It shows that "fitness" isn't always about competition; it can be dramatically increased through cooperation and integration. A lichen (a fungus and an alga) is "fitter" together than either is alone. 2. It's a Core Mechanism for Major Evolutionary Transitions: Wilson's work often touches on how complex systems arise from simpler ones. Symbiosis is the engine behind some of the most important leaps in evolution—the incorporation of mitochondria into cells, which made complex life possible, is a classic example of one organism living inside another to their mutual benefit. This fits perfectly with his multi-level selection view. 3. It's a Biological Model for Human Ultra-Sociality: This is the most direct link to books like This View of Life and [[The Neighborhood Project]]. Humans are a ultra-cooperative species. Our ability to form [[Society|societies]], cities, and nations relies on intricate networks of cooperation and division of labor. Symbiosis provides the biological metaphor and precedent for this. Our economic systems, where individuals specialize and trade, are a form of cultural and behavioral symbiosis. 4. It Aligns with Prosociality: Wilson's "Prosocial" movement uses evolutionary principles to encourage more cooperative and effective groups. Understanding symbiosis in [[Nature]] gives us a powerful narrative: cooperation is not just a nice idea; it is a fundamental, ancient, and highly successful law of life. It shows that collaboration is as "natural" as competition. In short, viewing symbiosis through a David Sloan Wilson lens means you're not just studying a biological curiosity. You are studying a fundamental evolutionary principle that explains everything from the cells in our body to the [[Structural Coupling|structure]] of our societies. It's a perfect splice. `Concepts:` `Knowledge Base:`