The document discusses systems thinking as a process for understanding complex issues by examining interrelationships and interdependencies rather than individual parts or linear cause-and-effect relationships. It provides an example of how systems thinking can help a company called Acme Co. address problems by viewing them as interconnected rather than as isolated issues. The document also discusses various patterns that can emerge in systems, such as limits to success, and provides questions to help identify leverage points to address constraints and sustain growth.