This reference work on the core competence of architects and designers provides a thorough and considered overview of the tools and theories, means and methods and practices and possibilities of creative design. In this substantially expanded edition, a review of recent developments since the first edition has been added, the chapters on digital tools have been updated, and a new, extensive practice section describes the foundations of digital, research-based processes and social agendas in design. The author "demonstrates compellingly that design is a synthesis of creative, technical and architectural skills coupled with academic research and reflection. Enlightening!" (Christian Thomas on the first edition). "Insight into the craft of design. Light in the darkness of how ideas take shape." (Jesko Fezer).