This was a fantastic book, with a very different view of time travel. I understand the guy’s first and second replays, as I would have done much the same. I don’t understand the later lives, as I would have seen what I could learn, and then progressed the world at a faster rate, made bigger changes, and been a powerful figure. I also found it interesting that the original timeline was the one they returned to, instead of any of the alternates they had created. I have to admit that I didn’t expect the way it ended.