Board Thread:The Flash discussions/@comment-9346948-20171122010215/@comment-24152851-20171125040648

While yes, the established rules seem to go more and more out the window the further the show advances, but they do still follow a slight degree of logic. One thing that seems to be consistent is the future can always be changed up until the point it passes the present, so no matter what DeVoe remembers there is no guarantee it is the same as the current DeVoe because the future can literally change in one episode's time.