The document discusses managing organizations in complex environments. It introduces the concept of complexity and how it differs from mere complication in having many intertwined dimensions beyond our understanding. This manifests in businesses through changes like new management models, values, and relationships. The document then provides tools for addressing complexity, including using different logics, meaning-based communication, collective intelligence, and innovation at multiple levels. It concludes with 10 tips for leaders, such as questioning structures, integrating uncertainty, and destroying "idols" in our heads.