These people ignore the simple fact that correlation does not imply causation. Then use correlations as an excuse to make up causes.
As to aspergers, here's a syllogism:
premise: Nick is perfectly normal.
premise: Nick *does* have the symptoms of asperger's
conclusion: the symptoms don't mean a fucking thing, they're just a list of common traits for "dorky" kids.
the real explanation of social ineptitude? parents who don't teach social skills. that simple.
SCIENTISM REALLY SUCKS