Checkout this article, "Childhood autism spikes in geek heartlands": https://www.newscientist.com/article/dn20589-childhood-autis...

There's a correlation between parents who are both "systemizers" and their child having autism.

I've also heard the theory that Austism is basically what we've been genetically selecting for over the last 100 years or so - the world wants brainless consumers - what is better than someone with sensory disorders, who can be primed to get up and buy with a simple prick?