He was right. Upon my return to Earth, the serious operations took place, those giving me plastic limbs that would become _living_ parts of my organic structure. The same outward push of the brain and nervous system that had created phantom pain now made what was artificial seem real. Not only did my own blood course through the protoplastic but I could feel it doing so. The adjustment took less than a week and it was a complete one. Fortunately the time was already past when protoplast patients were looked upon as something mildly freakish and to be pitied. Artificial noses, ears and limbs were becoming quite common. Whether there was some justification for the earlier reaction of pity, however, still remains to be seen. My career resumed and I was accepted for the next Centauri Expedition without any questions being asked. As a matter of fact, Planning Center preferred people in my condition; protoplast limbs were more durable than the real--no, let us say the original--thing. At home and at the beach no one bothered to notice my reconstructed arm and leg. They looked too natural for the idea to occur to people who did not know me. And Marla treated the whole thing like a big joke. "You're better than new," she used to tell me and the kids wanted to know when they could have second matter limbs of their own. Life was good to me. The one-year periods away from home passed quickly and the five-year layoffs on Earth permitted me to devote myself to my hobbies, music and mathematics, without taking any time away from my family. Eventually, of course, my condition became an extremely common one. Who is there today among my readers who has all the parts with which he was born? If any such person past the childhood sixty years did, _he_ would be the freak. Then at ninety new difficulties arose. A new Centaurian subvirus attacked my chest marrow. As is still true in this infection, the virus proved to be ineradicable. My ribs weren't, though, and a protoplastic casing, exactly like the thoracic cavity, was substituted. It was discovered that the infection had spread to my right radius and ulna so here too a simple substitution was made. Of course, such a radical infection meant my circulatory system was contaminated and synthetically created living hemoplast was pumped in as soon as all the blood was removed. This _did_ attract attention. At the time the procedure was still new and some medical people warned it would not take. They were right only to this extent: the old cardioarterial organs occasionally hunted into defective feedback that required systole-diastole adjustments. Protoplastic circulatory substitutes corrected the deficiency and, just to avoid the slight possibility of further complications, the venous system was also replaced. Since the changeover there hasn't been the least trouble in that sector.