I'm confused about the whole savitar not existing in the real world til now. So basically the only time he was able to be free was when they opened that philosopher stone? I need a good explanation on the philosopher stone. Cuz as much as we keep saying it's future Barry or a version of Barry, we were lead to believe that Savitars origin story is he was the first man granted speed through the philosopher stone. The philosopher stone throws me all the way off...