A few days ago I posted a piece which seemed to me to be pretty sympathetic and uncontroversial. In it, I mentioned that the parents of children on the autistic spectrum had for many decades, at least since 1943, been noticed frequently to be a little strange and somewhat different from other parents. I speculated that this might be due not so much to their also having autistic features or mental illnesses, both popular current ideas, but rather to their experiences as parents of a child who is outwardly ‘normal’ but who behaves bizarrely. As a...