The document discusses complex systems theory and its relationship to digital technology and social theories of mind, self, and society. It provides several key concepts of complex systems, including that phenomena are interdependent and non-linear, and small changes can lead to large consequences. Complex systems are composed of agents that communicate with one another and adapt and learn through co-evolution with their environment. The document also discusses how complex systems exhibit repeating patterns across scales of aggregation and how digital media allow for collaboration, participation, and knowledge production.