What else did these humans have in common? Each of them was only one person. Somehow, the efforts of a single human brain were able to fundamentally restructure a huge part of the world. It follows, then, that at any given time, the world must have one or more human-brain-sized points of extreme sensitivity. For consistency’s sake, let’s call these points nodes. A node can be a city councilmember, a small business, or a community of artists. If it guides people to act in some way — that is, if it has the power to influence individuals — it is a node. If a node is sensitive enough to be affected by the actions of a single human, then it is “human-sized”. Each node can connect to any other node, and the sum of all nodes is the complete set of power forces that act on humankind. Sketching a comprehensive diagram is left as an exercise for the reader.