Bionics is the science of fusing artificial parts with human parts in order to duplicate body functions. Though most people understand bionics to be the creation of "superhumans, " the practical applications are less dramatic, such as hearing aids, artificial limbs, and artificial hearts. In fact one out of every ten Americans depends on some type of artificial physical enhancement device. The future of this science holds amazing potential--from the creation of artificial nervous systems that would allow paralyzed people to move to devices that would give sight to the blind.