I'd heard of Strong Towns for years, mainly through guest Jason Slaughter's Not Just Bikes video series, and finally joined the community by taking a couple of their courses. I can't recommend them enough. Chuck Marohn founded that community. He found and publicized several of their core discoveries. Some include: North American cities grow based on a Ponzi scheme, the combination of a street and a road fails at both and wrecks everything it touches, cores of cities usually make the most economic sense, and outlying areas usually sap money and vitality. I invited Chuck because of the overlap between city planning and sustainability. Over half of humans live in cities. Many can't avoid following the patterns of where to live, traffic, where to eat and shop, and how to spend money determined by their urban environment. I often say we don't need more electric cars, we need fewer roads, not that electric cars help. I also learned from reading about him and you'll hear in our conversation that I wanted to learn from his having started a community running against the mainstream values making a lot of people money. I see him as a role model in this way. We talked about it some, but then got into the Spodek Method, which I think you'll hear he enjoyed.