"Think of it, Staghorn!" he'd said happily, earlier in the evening. "The phrase 'art is long and time is fleeting' won't mean anything any more! Artists will have hundreds of years to paint their pictures. Think of the books that will be written, the music that will be composed, the magnificent cities that will be built! Everyone will have time enough to achieve perfection. Think of your work and mine. We'll live long enough to unravel all the mysteries of the universe!" Staghorn had said nothing. Instead, he'd uncorked the small bottle Dr. Peccary had given him and sniffed at it. The bottle contained a sample of the Y Hormone which Dr. Peccary had spent many years developing. Its principal ingredient was a glandular extract from insects, an organic compound that controlled the insects' aging process. If administered artificially, it could keep insects in the larval stage almost indefinitely. Dr. Peccary's great contribution had been to synthesize this extract--which affected only insects--with protein elements that could be assimilated by mammals and humans. It had required years of experimentation, but the result was his Y Hormone--Y for Youth. In his laboratory he now had playful kittens that were six years old and puppies that should have been fully grown dogs. The only human he'd so far experimented on was himself. But because he'd started taking the hormone only recently, he was as yet unable to say positively that it was responsible for the splendid health he was enjoying. His impatience to know the sociological consequences of the hormone had made him bring a sample of it to Staghorn. After sniffing at the bottle, Staghorn had poured its contents into Humanac's analyzer. The giant computer gurgled and belched a few seconds while it assessed the nature of the formula. Then Staghorn connected the analyzer with the machine's memory units. As far as Humanac was concerned, the Y Hormone was now an accepted part of human history. But, except for this one added factor, the rest of Humanac's vast memory was solidly based upon the complete known history of the earth and the human race. Its principles of operation were the same as those controlling other electronic "brains," which could be programmed to predict tides, weather, election results or the state of a department-store inventory at any given date in the future. Humanac differed chiefly in the tremendously greater capacity of its memory cells. Over the years it had digested thousands of books, codifying and coordinating the information as fast as it was received. Its photocells had recorded millions of visual impressions. Its auditory units had absorbed the music and languages of the centuries. And its methods of evaluation had been given a strictly human touch by feeding into its resistance chambers the cephalic wave patterns produced by the brains of Staghorn's colleagues. * * * * *