 Cohen’s conservative model would look favorably on the organic development exhibited by medieval English towns and buildings—perhaps especially by churches—and which parallels the organic model of political development. This model rejects the concept of a blueprint involving an individual creator. Rather, the town or building evolves—apparently without a plan, over generations—, and often without stylistic consistency. The church as a building—or on the conservative model, a society—are like organisms, seemingly not the product of individual intentional action, but evolving naturally. Most English parish churches of medieval foundation were not built according to a single design, but developed by addition and subtraction; in the Middle Ages there was no profession of architect. Plans were produced by the master builder but it is contested how much there was an intentional, uniform schema generated prior to construction: