Autism Linked With DNA Our Ancestors Inherited From Neanderthals
www.sciencealert.com
Some time deep in our evolutionary past, most likely more than once, a significant amount of Neanderthal DNA became mixed in with our own, influencing everything from how we now fight illness to even our appearance.

While this is just a theory for the most part it is kind of interesting to think about. What if the double empathy problem is really just people who socialize like Neanderthals