Vicente Guallart argues that the global financial collapse of 2007 created an opportunity to rethink Barcelona's future. He proposes a self-sufficient city made of "productive neighborhoods at human speed, inside a hyper-connected metropolis." He discusses projects to reintroduce nature into the city, and to integrate history into contemporary life, and efforts to upgrade the city's information infrastructure hardware. Guallart describes current projects to cultivate self-sufficient neighborhoods, including new centers for digital fabrication, and a series of prototype solar houses.