Yeah. That's another thing about DW; it really does require strict adherence to the rules. But what's nice is, if something comes up that you don't know how to handle and you backtrack to the rules, you can almost always figure out by adjusting perspective. I think that's a basic summary of most DW Q&A here: "How does X work?"
"If you remember principles A and B, we can make X work by doing Z."