The document provides an introduction to complex adaptive systems theory. It discusses how complex systems like ecologies and social systems exist in a state of dynamic stability at the "edge of chaos" where they have enough stability to sustain themselves but also enough creativity for change and innovation. The edge of chaos allows systems to adapt to changes in their environment. Complex adaptive systems have several key characteristics, including that they are made up of autonomous agents that interact through shared rules in a networked structure, allowing for profuse experimentation and occasional rapid shifts in shape or direction in response to changes.