Autism is a neurological disorder. It's not caused by bad parenting. It's caused by, you know, abnormal development in the brain. The emotional circuits in the brain are abnormal. And there also are differences in the white matter, which is the brain's computer cables that hook up the different brain departments.
Normal people have an incredible lack of empathy. They have good emotional empathy, but they don't have much empathy for the autistic kid who is screaming at the baseball game because he can't stand the sensory overload. Or the autistic kid having a meltdown in the school cafeteria because there's too much stimulation.
I'm a visual thinker, really bad at algebra. There's others that are a pattern thinker. These are the music and math minds. They think in patterns instead of pictures. Then there's another type that's not a visual thinker at all, and they're the ones that memorize all of the sports statistics, all of the weather statistics.