The theme of time attracts me immediately. Reading the summary no doubt, this is a book that promises. One wonders how the author at the beginning could be imaginative, despite the repetitive nature of the basic plot, and we see the middle of the book that many things are not right. What happens to the protagonist is a universal fantasy, reliving his life and to make sure to do better, having learned from his past life, take other paths, make other choices. But obviously the story Replay is far from simple, and if you end up wondering what it would be used, for what purpose relive many times, we should already be wondering why live at all. For whom, for what, and then what?
Despite this relatively pessimistic view, the end makes you think, as time goes on, what we can do on the place of human beings in the universe and so on. Difficult to say more without betraying the suspense, so I can only recommend it!