One of a three-part series tied to debates at the University of Michigan (based on Dean Kelbaugh's, perhaps dubious, concept that three strains of urban design approaches are relevant in the US today), this one was interesting as it puts old Berkeley chums head to head to debate Calthorpe's approach to a region-focused "new urbanism." Lerup, of course, takes a position that appreciates, or at least accepts, much of what we call sprawl (highway corridors as "speedzones" that order such fine cities like Houston) with an eye towards modifications - within the system - to approach a better ecological balance (flat, planted roofs on the otherwise detached houses). All somewhat interesting but certainly less dialectally charged - or more overtly respectful - than I expected.