James, The field of rehabilitation engineering is all about redesign of the environment (largely, the equipment available within that environment) to allow people with disabilities to accomplish the same things in different ways. Whether it is fixing an automobile minus a few fingers, or driving a tractor minus an arm or a leg, or a great deal inbetween doesn't mater. You are right. Once someone has successfully entered a field of endeavor, we have no problems dealing with the idea that if something happens to limit that individual, we can and should make adjustments so that they can continue. Then why is it, do you suppose, that people have difficulty figuring out that it is OK for people who have those same functional limitations because of exisitng disability to enter the same field? Dr. Jane Jarrow