The project comprises two twin installations, one with the Sao Paulo project (10_Dencies São Paulo, 1998) and the other with the Venice project (10_Lavoro Immateriale, 1999). It explores the possibilities of urban intervention and interference on complex environments, creating a topological collage that mixes databases and urban statistics to the citizens’ imagination. It is a study on megalopolis based on an urban cartography collectively created by experts and the population.