Somehow or other--the cause has not been determined to this day--my artificial heart went on the blink. I did not quite die immediately, but the prognosis was once again entirely unfavorable. Considerable damage had somehow eventuated to my lungs, my liver and my kidneys. I was a mess. By this time, my parents had made such a huge investment in me, and my progress reports had been so uniformly excellent, that in spite of all the advice from the doctors, they determined to attempt salvage again. * * * * * A complete repackaging job was decided upon. Blood was to be received, aerated, purified and pumped back to the arterial system through a single mechanism which would weigh only about thirty-five pounds. Of course, this made portability an important factor. Remember that I was only ten years old. I could probably have carried such a weight around on my back, but I could never have engaged in the proper development of my whole body and thus could never have been accepted back again by Princeton. It was therefore determined to put the machinery into a sort of cart, which I would tow around behind me. Wheels were quickly rejected as being entirely unsatisfactory. They would excessively inhibit jumping, climbing and many other boyish activities. The manufacturers finally decided to provide the cart with a pair of legs. This necessitated additional machinery and added about twenty-five pounds to the weight of the finished product. They solved the problem of how I would handle the thing with great ingenuity by making the primary control involuntary. They provided a connection with my spinal cord so that the posterior pair of legs, unless I consciously ordered otherwise, always followed in the footsteps of the anterior pair. If I ran, they ran. If I jumped, they jumped. In order to make the connection to my body, the manufacturers removed my coccyx and plugged in at and around the end of my spinal column. In other words, I had a very long and rather flexible tail, at the end of which was a smoothly streamlined flesh-colored box that followed me around on its own two legs. A human has certain normally atrophied muscles for control of his usually non-existent tail. Through surgery and training, those muscles became my voluntary controllers for my tail and the cart. That is, I could go around waggin' my tail while draggin' my wagon. Pardon me, Miss Dix VI. That just slipped out. * * * * * Well, the thing actually worked. You should have seen me in a high hurdle race--me running along and jumping over the hurdles, with that contraption galloping along right behind me, clearing every hurdle I cleared. I kept enough slack in my tail so I wouldn't get pulled up short, and then just forgot about it. Going off a diving board was a little bit different. I learned to do things like that with my back legs under voluntary control.