Leverage points are places within complex systems where small shifts can create large changes. They are not always intuitive. The document discusses leverage points within economies, poverty alleviation, and ship navigation. It also analyzes where to intervene in systems, such as changing goals, rules, feedback loops, material stocks and flows, or parameters. Finally, it distinguishes between solutions that treat symptoms versus systemic interventions that address underlying causes, and provides models of the Cat Ba Biosphere Reserve and Cat Ba Island as examples of systems analysis.