So, I've read it a while ago and never reviewed. But first of all, let's establish my bias: Not only am I a depressed overly talkative introvert, I'm a fascist as well. I've known it for a while, I get it from me mom. I don't like people who like to avoid work (and especially people who boast about it, a very trendy thing to do in modern day Israel) and I don't like stupid people. I'm working on the latter, as I realize why I'm wrong to do that.
Personally, I have zero experience with autistic kids. Any modern book about the subject must stress they are no worse than any other kid: they can grow to become productive members of society, all they need is love and patience, like any other child. That's all great, and the lesson "if you try hard enough, you can be anything" is important in encouraging children to apply themselves in school etc., but I disagree with the conclusion about the kid himself, as I understand it from the book.
The kid fantasizes about all normal people dying and he having the world to himself, never again being forced to interact with human beings. He carries a knife and pulls it on people seemingly at any available opportunity. He has no respect for police officers or authority of any kind, if he feels he is in the right. He has no compassion for human beings, as creatures who possess a soul and the right to live, but rather treats them like computers that walk. He taught himself A-level math.
I don't know how his arrested social development is connected to normal hormonal changes during puberty (if any), but he's supposed to be fifteen and has shown no interest in girls (or boys, for that matter). I don't know if he'll grasp the intricacies of courting, but I foresee problems on that front, as no one can explain for him in detail what constitutes "sexual harassment" these days - it can be anything, depending on the other person's feelings, a concept he doesn't quite grasp.
I guess that years of kind and firm treatment with a psychologist can help him improve his social skills, and he probably can do well in some scientific endeavor (though mathematicians working alone is a rare thing indeed these days, Andrew Wiles being the exception that proves the norm), but I think he's a disaster just waiting to happen. I can't help but feel sorry for his parents, adulterous as they may be, for at least they qualify for "human". Am I heartless?
Another thing is that I noticed I share some of my nerdier qualities with the main character. For example, he disaproves of euphemisms for the same reason I do. I think it is a warning to us nerds: behave, or people will treat you like they treat autists. And no, simulating asperger-syndrome is not cool, and does not make you a hacker.