Most people, when their culture began to run wood through sawmills and build homes out of the dimensional lumber that results, would not have thought to ask what, in our human experience and capability, might be affected by this. Dimensional lumber, and the carpentered corners that result, are novel features of the modern human’s environment. How has it changed how we perceive the world? Reframing your approach to the world, such that those questions do occur to you, even if you are not sure what the answers might be, is part of the goal of this book.