Here's the dark side of franchises like 'Star Wars' that just keep going

[The author of this post has not seen "The Force Awakens," but this post contains possible spoilers. But what doesn't these days? Still, reader beware.]This weekend, the Force will awaken. X-Wings will soar. Light sabers will clash. After three crushingly disappointing prequels, the world will get a "Star Wars" movie that actually looks, sounds, and feels like a "Star Wars" film.