He fails utterly at world-building. Where does Nutty Norman live? A house, an apartment, under a bridge? Where does Nutty Norman's victim live? Are there pets, valuables, is there a car in the driveway at either location? Is it a big town, a suburb, or rural? Hardwood, linoleum or carpet? What does Norman do in his free time? Is there a favorite place in the town where he likes to eat, a convenience store he patronizes? Where does Norman get his weapons?How does Norman dress? What are his next door neighbors like? Observant? Elderly? Religious? Preoccupied with their own lives? Richer, or poorer than Norman's family? Is Norman's yard well-kept, or shabby and overgrown? Does the rest of his family take part in the community, or are they loners too? How does Norman keep people from noticing how Nutty he is?