I'd just like to remind everyone that each week approximately 23% of Americans take acetaminophen, so if it really caused autism, we'd have a way more functional train system in this country.
@dan I went Tylenol-free for the '82 Chicago poisoning scare. I didn't have any at that point, so I just kept not buying it, partly because it was more expensive than ibuprofen, and Costco-sized jugs.
Had an autistic kid in the aughts (now studying Molecular Engineering at UChicago).
I learned today it wasn't commercially released until 1955, so no one over 70 apparently is actually autistic. I'm not sure who Hans Asperger was studying.