A friend of mine recently emailed me a telling criticism of New Urbanism. “I’ve noticed a strange need to quantify everything from these guys. It’s almost like they are trying to deduce a pattern . . . and even worse . . many would lean toward legislating the pattern.” There it is in a nutshell. Of course, ever since Palladio wrote Quattro Libri, architects have been fascinated by the dimensions of things—of rooms, ceilings, doors, windows, and so on. Palladio had rules about all of them. But he was always careful to allow for exceptions. Writing about the height of ceiling vaults, for example, he observed, “There are other heights for vaults which do not come under any rule, and the architect will make use of these according to his judgement and practical circumstances.” Judgement, not legislated patterns.