There is also a crippling loss of nerve cells in brain areas involved in cognitive functions which leads to the main behavioural symptom, failure of the memory.
For Crawford, the failure to appreciate skilled manual labor is a symptom of something even worse: a narcissistic refusal to grapple with the material world.
Failure to develop this trick is an early symptom of autism, a syndrome whose main underlying feature is an inability to understand that other people have minds, too.