In 1978, under immense pressure at work, Edgar Schneider suffered a nervous breakdown. After convalescing, he returned to work, but within a few months he was again suffering from problems involving short-term memory and concentration. He was described as eccentric, tangential, illogical and hallucinatory; and misdiagnosed as schizophrenic. Sixteen years later, the chance reading of an article on autistic savants alerted Schneider to the...