We are able to feel sympathy for Christopher. By experiencing the story as Christopher does, we view the world through his eyes and are able to understand his world. I don't think this would have been possible if the story had been told about Christopher. It would be hard, I think, for people with no personal knowledge of Asperger's syndrome to understand why he had to do some of the things he did or why his rituals were so important. Christopher has to learn to read faces to interpret emotions and he has no concept of the emotions that others around him feel. He does suffer, I think, when he decides to leave his father. Christopher will find success in his future. He proves this when he ventures out and searches for his mother. This shows growth and a change in his character.