Over a decade ago, when we started writing our book, "Suburban Nation," we had no idea how quickly the conversation was about to change. The New Urban critique of sprawl, initiated by my co-authors in the late seventies, was at first an aesthetic discussion -- by God, this stuff is ugly. But then, when they discovered that it was possible to build real towns again, it became a social discussion -- we shouldn't have to live our lives stuck in traffic between the soulless subdivision and the plastic shopping mall.