Continuing his exploration of the organization of complexity and the science of design, this new edition of Herbert Simon's classic work on artificial intelligence adds a chapter that sorts out the current themes and tools&mdash;chaos, adaptive systems, genetic algorithms&mdash;for analyzing complexity and complex systems.<br /><br />There are updates throughout the book as well. These take into account important advances in cognitive psychology and the science of design while confirming and extending the book's basic thesis: that a physical symbol system has the necessary and sufficient means for intelligent action. The chapter &quot;Economic Reality&quot; has also been revised to reflect a change in emphasis in Simon's thinking about the respective roles of organizations and markets in economic systems.