"Length of," Jack corrected. "Not the same as age. The Master dies in at least some timelines, and he's pretty heavily represented here, too. In fact, I think it's only off you by maybe a couple, from what I've seen. Romana died with Gallifrey. Your timeline doesn't seem to have ended yet in any universe I've seen. In fact I've seen a couple beyond that face you're wearing here, and we both know - mine'll stop with the universe."