Book excerpt: This book constitutes the thoroughly refereed post-proceedings of the First International Workshop on Radical Agent Concepts, WRAC 2002, held in McLean, VA, USA in January 2002. The 32 revised full papers presented together with an invited article, 6 poster papers, and 2 panel reports were carefully reviewed and selected for inclusion in the book. The papers are organized in topical sections on adaptation and learning, agent-based software engineering, agent architectures, agent communication and coordination, and innovative applications.