Fnord wrote:
Evolution works only when genetic changes provide an advantage to reproductive success. People with autism often complain about being involuntarily celibate. Therefore, Autism provides no advantage to reproductive success. Personally, I believe that if autism is somehow a product of evolutionary processes, it is a step backwards in those processes.
As long as neurodiverse people and neurotypical people can produce viable offspring together, they will be of the same species.
As long as neurodiversity limits our physical and social capabilities, we will not be superior to neurotypical people.
I believe autism (or at least one type of it) is a polygenic trait that is maintained through frequency dependent selection. That is, the alleles responsible do boost reproductive success in small amounts, but if you have enough to be classed as autistic your chance of reproducing falls off a cliff. But your relatives have enough increase in success to compensate for your loss.
Of course this may no longer be true, given that until you get into the one percenter territory, fertility declines with increasing income.