The idea of time travel is fraught with paradoxes. If you change the past, won't you change yourself in the future? Can you exist at the same time as an older or younger version of yourself? Time travel fiction is often defined by how cleverly it handles these problems, but, at least in my experience, the problems always persist since they are truly paradoxical.
What would happen if you wrote a novel ostensibly about such paradoxes, made it self-referential, and cast it as a literary metaphor? Well... not much. This novel was both too much for me and not enough. I found it alternately either, meaningless or beyond my comprehension, or insipid.