I enjoyed this! It's natural that this gets compared with Curious Incident of the Dog in the Night-Time, since both books are narrated by boys along the autism spectrum, but they are pretty different. Marcelo is much more high-functioning and self-aware than the kid from Curious Incident, and he engages more directly with big philosophical questions. The more I think about it, the more weird I find the events of the last 1/4 of the book, but while I was reading it I didn't question it, so I suppose that's a good sign. Anyway! Pretty good stuff.