So, if Richard said he is the way he is (ageless) thanks to Jacob: what's gonna happen to him now that Jacob is dead? Is he going to get old really fast now or is going to turn into ashes right in front of everybody, or he is going to stay the same but starts to age from now on? I think that would be a clue in the next season to tell us if Jacob is really dead. Because in every sci-fi/fantasy movie if the source of the magic or power dies then everything made by it disappears too, right? What do you think about that?