and other fields, and it is useful for all professionals, across a wide range of employment areas, who share an interest in renewing planning practice. Such an endeavour is seen as both important and timely, recognising that many complex planning tasks necessitate organisations - be they public or private - to engage in planning to prepare proactive decision-making.

The author, dr. techn. Steen Leleur, is professor of decision support systems and planning at the Technical University of Denmark. On the basis of development in systems science and research in planning theory and technical modelling, he presents a new framework for planning which takes explicit account of complexity and uncertainty. Such an approach to planning is highly needed in a wide range of today's application areas in society and business.