Milo: The medical profession is limited like any other profession. The human body and the brain most particularly is regretably and luckily far more complicated than any piece of electronic or mechanical equipment. When I worked and my instrument failed to perform, I was told to call in the instrument repairman to fix it within an hour or two rather than for me to spend a week trying to take it apart. Yet, my friend the mechanical engineer took his nose apart to see what made it run...There are too many imponderables in life...why does cholesterol clog my arteries and not my neighbors'? I am waiting to see positive results from fetal transplants and/or recombinant DNA therapy for genetic cerebroside deficiencies...Of course, we could discuss this ad infinitum...Be well. Michel