Arias, Eden, Fischer, Gorman, & Scharff 1 ToCHI Submission Transcending the Individual Human Mind Ñ Creating Shared Understanding through Collaborative Design Ernesto Arias 1,3 , Hal Eden 1,2 , Gerhard Fischer 1,2 , Andrew Gorman 1,2 , and Eric Scharff 1,2 1 Center for LifeLong Learning & Design and Institute of Cognitive Science 2 Department of Computer Science, 3 College of Architecture and Planning University of Colorado, Boulder {ernie, haleden, gerhard, agorman, scharffe}@cs.colorado.edu Abstract Complex design problems require more knowledge than any single person possesses because the knowledge relevant to a problem is usually distributed among stakeholders. Bringing different and often controversial points of view together to create a shared understanding among these stakeholders can lead to new insights, new ideas, and new artifacts. New media that allow owners of problems to contribute to framing and resolving complex design problems can extend the power of the individual human mind. Based on our past work and study of other approaches, systems, and collaborative and participatory processes, this paper identifies challenges we see as the limiting factors for future collaborative human- computer systems. The Envisionment and Discovery Collaboratory (EDC) is introduced as an integrated physical and computational environment addressing some of these challenges. The vision behind the EDC shifts future development away from the computer as the focal point, toward an emphasis that tries to improve our understanding of the human, social, and cultural system that creates the context for use. This work is based on new conceptual principles that include creating shared understanding among various stakeholders, contextualizing information to the task at hand, and creating objects-to-think-with in collaborative design activities. Although the EDC framework is applicable to different domains; our initial effort has focused on the domain of urban planning (specifically transportation planning) and community development.