The motivations of the Main vs. Impact Characters which they are unable to see about themselves
Both the Main Character and the Impact Character (who stands in the Main Character's path) are driven by their particular motivations. In a story, each has a prime motivation that describes the one issue in each that they cannot see in themselves. It is because they cannot see it in themselves that it works below the level of their consciousness to motivate them. Because they cannot see it, it is called a Blind Spot. In a change character, the Blind Spot is the actual source of the problem common to both the Overall and Main vs. Impact stories. In a steadfast character, the Blind Spot represents what drives him to become the agent of the common solution to both the Overall and Main vs. Impact stories. In either case, although other characters may see it quite clearly in the Main and Impact Characters, neither Main nor Impact can see the Blind Spot in themselves.