People assume that time is a strict progression of cause to effect, but *actually* from a non-linear, non-subjective viewpoint - it's more like a big ball of wibbly wobbly... time-y wimey... stuff. Time travel, Newt. Beautiful, wonderful, time travel. But I wouldn't ask questions you don't want to know the answer to, or go around meddling with time. Bad things happen to wizards that mess with time.