[Kinsey's studies included] stutterers, amputees, paraplegics, even those with cerebral palsy were observed. Kinsey wanted to document the full spectrum of human sexuality, but it was more than that. He believed these people might have things to teach us about the physiology of sex. And he was right. These groups alerted Kinsey--and the scientific community as a whole--to the complicated and crucial role of the central nervous system in sex and reproduction. Kinsey had noted that a stutterer in the throes of sexual abandon may temporarily lose his stutter. Similarly, the phantom limb pain some amputees feel temporarily disappears. Even the muscle spasticity of cerebral palsy may be briefly quieted. The body's limiting factors seem to get shut off. The organism is driven toward nature's singular goal--conception, the passing on of one's genes--and anything that stands in the way is pushed into the background.