Oversimplified and self-serving, but interesting theory: "All human evolution was driven by slightly autistic Asperger’s and autistic people. The human race would still be sitting around in caves chattering to each other if it were not for them."
“Going back thousands of years, people who displayed autistic traits would not only have been accepted by their societies, but could have been highly respected.” An interesting hypothesis, except, of course, there’s no way to actually test it.