David Mamet also eschews backstory, character histories, taxicab scenes and explanations of any kind that don’t work with the plot. Mamet’s take is that if the audience really need to know it, they’ll make it up, since that’s what people are good at. The endings of 2001 and Inception are good examples – if people are talking about the endings, they’re talking about the films – as are the start of Interstellar (how did we get here?) and just about everything ever filmed by Tarkovsky. On the other hand, all irregularities will be handled by the forces controlling each dimension.