This selection of 21 essays concentrates on using complexity theory, also known as complex adaptive system theory. Contributors describe moves toward a supportive nonlinear modeling structure, the role of "waste" in complex systems, the evolution of the administrative state, the existential complexity appreciation of policy development and analysis, decision-making on resources, robust policy analysis for complex open systems, and taking a pluralistic approach. Other essays address economies (voting, economic policy from heterogeneous agent-based simulation, sustain able development, chaotic systems in economics, and lotteries) and public choice and information management in situations of complexity, including integrating policy analysis and complexity, setting networks rules in international technology, and trans-interdisciplinary information. Includes four case studies on systems in public policy. Annotation 2008 Book News, Inc., Portland, OR (booknews.com)