One of the potential problems of exposition/backstory in a novel or movie is that it may slow the action down to a crawl, show its hand, and ultimately bore us. Yet, supplying information that is essential to the plot’s progression is unavoidable. A novel or movie can’t painstakingly trace every single prior event. It has to jump around, intrigue us and then surprise us through the revelation of some connection to a past occurrence, action, or character trait. Without sufficient grounding, however, none of the above is achievable.