The document discusses the emergence and growth of shared workspaces and the social innovation movement. It describes shared spaces as a new model of collaboration that is helping to address complex social, economic, and environmental challenges. The document also outlines the Centre for Social Innovation's theory of change, which is that shared physical spaces can foster community and innovation by allowing ideas and knowledge to be exchanged. Finally, it discusses three related movements contributing to the growth of shared spaces: co-location of nonprofits, coworking spaces for independent workers, and incubation of social change projects.