I agree with Will in that Kunstler is thought provoking - a good quality in a speaker, whether one agrees with him or not. I read the book "Geography of Nowhere" during my 10-year tenure as a planner for the city of Burlington, Vermont. Kunstler is an irreverent sort with strongly held opinions, no doubt, but he makes some very valid points about the cluster f@#k (to use his words) we've created in our contemporary built environment. Having him on the agenda was a big reason why I almost (now wished I'd had) attended the conference.
