Well you're wrong. It's in your DNA and you can "catch it". This is clear by the ridiculous explosion in people that have it. Obviously there's something going on here. Whether it's vaccines, water or whatever else they blame it on is yet to be seen. But it's not just in your DNA.
What explosion
The explosion has come from lack of ability in diagnosis the condition.
Do you have any idea how severe the problem of under diagnosis has been.
It's one of the reasons autism is such a big deal. A large large large portion of people being diagnosed with OCD, ADD, Anxeity, Borderline personality disorder, depression, Dyslexia, etc etc actually have high functioning autism.
The fact is the pysc community has totally fucked on this one.