ORDER AND CHAOS. NORM AND FORM

Architecture is always the result of a generative process, carried out on different scale: those peculiar to the city (urban project) and those to the building; or even to the object, if we are in the field of industrial design. “Shape generation” is based on issues of regularity and/or irregularities and it concerns the locking on and the enforcements of laws, principles, rules and exceptions. Architecture is not just a figurative art, and this is easier to understand if you look at the processes of generation of cities: even when it is seemingly spontaneous and unplanned, it highlights evolutionary "natural" processes due to the will and the case. The paper analyzes the layout of different cities, the Pattern Language’s theory by Christopher Alexander - stating that it is beauty of shape and form which rules emerging life and remarking a set of problems and documented solutions for architects - and, as an evolution of those theories, our studies on Makoto Sei Watanabe’s Induction cities. This is a subject that a theoretical mathematician or a computer scientist might call “generative grammar”. So, what does it mean regularity or chaos in the developing of urban form