In the digitally connected world activities can be carried out practically anywhere at any time. The expansion of individual choice means that decision-making is decentralized, and building use becomes an emergent property of activity-space-time systems. Buildings are still needed, but what patterns of use can be expected?Activity-Space Research uses simulation modelling to investigate the new digital world, where past experience is obsolete. Modelling contrasts with conventional case study research: case studies are stuck in the present and are ineffective for investigating the future. 'Activity-Space Research: built space in the digital world' gives an accessible overview of the modelling approach to architectural research. It presents a wide variety of modelling studies with extensive use of diagrams and images, together with summaries of papers that have been published in academic journals.The book is aimed at everyone who wants to expand their understanding of an exciting and under-developed field of architectural research.