By its very nature, the city tends to create transition spaces without function or meaning. Abandoned areas, border areas, indistinct spaces. The solution can be to implement micro-revolutions, not restylings, but rather spatially limited and strongly dynamic projects. The goal is to get a set of limited but widespread interventions that can support territorial planning goals at micro-urban scale.

The "consolidated city" in most cases is expanded, dispersed and frayed, often without a well-defined boundary between urban space and the natural environment. A solution to increase urban housing density in order to counter the endogenous problems generated by the extended city can be to rethink the city as an organism that develops over multiple interconnected levels. A city that grows in height and extends through the creation of new levels, over existing urban spaces, which are fully integrated with it as regards connections, services and functions.