Either the Horn of Eld makes a world/time-reboot/alteration of difference, or it makes no difference. If the world you live in, keystone Earth, changes at all by repeating its timeline altered in any way, the butterfly effect would guarantee drastic changes. I went to the movie with a friend who had never read the books, and he got it. With no explanation from me. They pretty much encapsulated the entire plot in two sentences at the beginning. The Dark Tower holding the universe together and it being said the mind of a child could bring it down. What's more, he, as a fan of many action movies, thought that, far from pedestrian, the action scenes were exceptional. He couldn't believe the movie wasn't far more well-known, and yes, a big hit. He knew Stephen King, but not the Dark Tower series. Now he wants to read it. And, I know him, he will. But hey, let's bomb this movie into the basement and keep more people like him from hearing about it, by all means.
As Jake entered the house and went toward one of the portals that were posted where the thinnies were, definitely from the books, I watched the boards jump as though something were following him through the rooms. Walter himself explained why Roland was immune to his magic. They imply Roland's multiple hundreds of years of age by the doctors gathering to meet him in disbelief as he should already be dead from radiation poisoning and several different venereal diseases, much less his wound. He has been imbued by the Tower, as it's champion, with some pretty potent magic, as what he is, a gunslinger, not a wizard. There's a lot more to this adaptation/variation on a theme, with shortcomings and points in it favor, but there was definitely plenty of room for follow-ups. The graffiti saluting the Crimson King, and, for us, the knowledge that Walter is Randall Flagg, and like in the Stand he will return from the dead to start his mischief all over again. I liked the movie. It moved fast, wasted little time, crammed exposition in in the sparest, sparsest and yet, quite easily understandable conversations that came through like campfire stories, slipping unobtrusively into the viewer's consciousness. As I said, my friend got it. He had a couple of questions, they were easily answered, and he was enthusiastic to go and read the books, and brag about the movie on Facebook.
cool story bro
glad you and your pal got it, unlike the rest of us