Yeah, watching it it never occurred to me either but I'm fairly certain the asian doctor lady concluded he was possible HFA or AS. I don't remember for sure because its been awhile and it was a laundry list of acronyms in her verdict. In retrospect, I do see some traits of his that are familiar... his lack of close friends, obliviousness to serious pain/injury, strong sense of right and wrong and unwillingness to see the "grey" areas... I don't know, the movie was okay. It made me laugh a few times.