And so Thatcher Blitt made his fortune. He saw clearly at the beginning what most of us see only now, and he patented it. He was aware not only of the deep-rooted sense of snobbishness that exists in many people, but also of the simple yet profound force of curiosity. Who exactly, one says to oneself, _was_ my forty-times-great-great-grandfather? A Roman Legionary? A Viking? A pyramid builder? One of Xenophon's Ten Thousand? Or was he, perhaps (for it is always possible), Alexander the Great? Thatcher Blitt had a product to sell. And sell he did, for other reasons that he alone had noted at the beginning. The races of mankind have twisted and turned with incredible complexity over the years; the numbers of people have been enormous. With thirty thousand years in which to work, it was impossible that there was not, somewhere along the line, a famous ancestor for everybody. A minor king would often suffice, or even a general in some forgotten army. And if these direct ancestors were not enough, it was fairly simple to establish close blood kinship with famous men. The blood lines of Man, you see, begin with a very few people. In all of ancient Greece, in the time of Pericles, there were only a few thousand families. Seeing all this, Thatcher Blitt became a busy man. It was necessary not only to patent his idea, but to produce the enormous capital needed to found a large organization. The cost of the time scanner was at first prohibitive, but gradually that obstacle was overcome, only for Thatcher to find that the government for many years prevented him from using it. Yet Blitt was indomitable. And eventually, after years of heart-rending waiting, Genealogy, Inc., began operations. * * * * * It was a tremendous success. Within months, the very name of the company and its taut slogan, "An Ancestor for Everybody," became household words. There was but one immediate drawback. It soon became apparent that, without going back very far into the past, it was sometimes impossible to tell who was really the next father in line. The mothers were certain, but the fathers were something else again. This was a ponderable point. But Blitt refused to be discouraged. He set various electronic engineers to work on the impasse and a solution was found. An ingenious device which tested blood electronically through the scanner--based on the different sine waves of the blood groups--saved the day. That invention was the last push Genealogy, Inc., was ever to need. It rolled on to become one of the richest and, for a long while, most exclusive corporations in the world. Yet it was still many years before Thatcher Blitt himself had time to rest. There were patent infringements to be fought, new developments in the labs to be watched, new ways to be found to make the long and arduous task of father-tracing easier and more economical. Hence he was well past sixty when he at last had time to begin considering himself.