It's important to remember that when we make inevitable war with the machines, it was really all our fault -- take this guy Lin, for example. Sure, he means well, building this massage chair out of scrap for his aging wife, who suffers from joint pain, but future generations scraping together a meager existence as they huddle for protection from homicidal robots and a rage-filled Christian Bale won't be exactly forgiving of Lin's plight. "Why couldn't he just travel backwards in time to stop the joint pain before it started?" they'll ask. "Didn't he know he was endangering the entire human race?"