A piece of wall can be visually disintegrated from the whole into a separate triangle by plunging a diagonal of light from edge to edge on the wall; that is, side to floor, for instance.
“I think the reason why we were able to actually get it made was that we were so extremely naive - we had no experience at all here. We didn't even know that you were supposed to have an agent. We didn't even have a lawyer. We didn't know one soul.”