Filmmaker Christopher Nolan has thrown shade on contemporary comic book movies, calling them an ‘engine of commerce’ and likening movie studios that churn them out to ‘machines.’ Nolan made the statements during the promotional tour for a book on his films, written by Tom Shore. He said that he was lucky to have made The Dark Knight trilogy of films when he did — the first movie, Batman Begins, arrived three years before the first Marvel Cinematic Universe film. He said that one of the biggest advantages he had was that he was given time between sequels.