Thomas Jefferson may have had it. The pianist Glenn Gould almost certainly had it. There are even those who insist (probably incorrectly) that Albert Einstein had it. Whether it is called "geek syndrome," "high-functioning autism," or simply "Asperger's," it is not just one of the most poorly understood of all neurological disorders, but amazingly one of the fastest-growing of all psychiatric diagnoses in America today. Some support organizations even claim that as many as one in five hundred people in the general population suffers from some aspect of the disease. Basing his report on...