My understanding of biology is that humans are a sexually dimorphic species, and that sexually dimorphic traits are a core heuristic for determining attractiveness (ie, women tend to be attracted to men with an extreme male manifestation of a sexually dimorphic trait, and ditto for men regarding women). Furthermore, if we accept Simon Baron-Cohen's Empathising–systemising theory, then autism represents the extreme of the male preference for systematisation and things over empathising and people, and so it seems as though autistic men should be attractive and socially-skilled men should be unattractive. Yet the opposite is true. Why is this?