about mine? What's gonna happen, the world should be doomed?"

Clocker found admiration for Dr. Harding's approach. It was a line tried habitually by politicians, but they didn't have the same kind of captive audience, the control, the contrived background. A cosmic pitch like this could bring a galactic payoff, whatever it might be. But it didn't take his mind off Zelda.

"I see you are somewhat aghast," Dr. Harding observed. "But is my statement really so unexpected? You know the history of your own race—a record of incessant war, each more devastating than the last. Now, finally, Man has achieved the power of worldwide destruction. The next war, or the one after that, will unquestionably be the end not only of civilization, but of humanity—perhaps even your entire planet. Our peaceful, altruistic civilization might help avert catastrophe, but that would require our physical landing on Earth, which is not possible. Even if it were, there is not enough time. Armageddon draws near.

"Then why have we brought you here?" asked Dr. Harding. "Because Man, in spite of his suicidal blunders, is a magnificent race. He must not vanish without leaving a complete record of his achievements."

The crowd nodded soberly. Clocker wished he had a cigarette and his wife. In her right mind, Zelda was unswervingly practical and she would have had some noteworthy comments to make.

"This is the task we must work together on," said Dr. Harding forcefully. "Each of you has a skill, a talent, a special knowledge we need for the immense record we are compiling. Every area of human society must be covered. We need you—urgently! Your data will become part of an imperishable social document that shall exist untold eons after mankind has perished."

Visibly, the woman in the housecoat was stunned. "They want to put down what I can tell them?"

"And tailoring?" asked the little man with the pin-cushion vest. "How to make buttonholes and press clothes?"

The man who looked like a banker had his chin up and a pleased expression on his pudgy face.

"I always knew I'd be appreciated some day," he stated smugly. "I can tell them things about finance that those idiots in the main office can't even guess at."

Mr. Calhoun stood up beside Dr. Harding on the rostrum. He seemed infinitely benign as he raised his hands and his deep voice.

"Friends, we need your help, your knowledge. I know you don't want the human race to vanish without a trace, as though it had never existed. I'm sure it thrills you to realize that some researcher, far in the future, will one day use the very knowledge that you gave. Think what it means to leave your personal imprint indelibly on cosmic history!" He paused and leaned forward. "Will you help us?"

The faces glowed, the hands went up, the voices cried that they would.

Dazzled by the success of the sell, Clocker watched the people happily and flatteredly follow their frock-coated guides toward the various buildings, which appeared to have been laid out according to very broad categories of human occupation.

He found himself impelled along with the chattering, excited woman in the housecoat toward a cerise structure marked SPORTS AND RACKETS. It seemed that she had been angry at not having been interviewed for a recent epic survey, and this was her chance to decant the experiences of twenty years.

Clocker stopped listening to her gabble and looked for the building that Zelda would probably be in. He saw ARTS AND ENTERTAINMENT, but when he tried to go there, he felt some compulsion keep him heading toward his own destination.

Looking back helplessly, he went inside.

He found that he was in a cubicle with a fatherly kind of man who had thin gray hair, kindly eyes and a firm jaw, and who introduced himself as Eric Barnes. He took Clocker's name, age, specific trade, and gave him a serial number which, he explained, would go on file at the central archives on his home planet, cross-indexed in multiple ways for instant reference.

"Now," said Barnes, "here is our problem, Mr. Locke. We are making two kinds of perpetual records. One is written; more precisely, microscribed. The other is a wonderfully exact duplicate of your cerebral pattern—in more durable material than brain matter, of course."

"Of course," Clocker said, nodding like an obedient patsy.

"The verbal record is difficult enough, since much of the data you give us must be, by its nature, foreign to us. The duplication of your cerebral pattern, however, is even more troublesome. Besides the inevitable distortion caused by a distance of 10,000 light-years and the fields of gravitation and radiation of all types intervening, the substance we use in place of brain cells absorbs memory quite slowly." Barnes smiled reassuringly. "But you'll be happy to know that the impression, once made, can never be lost or erased!"

"Delighted," Clocker said flatly. "Tickled to pieces."

"I knew you would be. Well, let us proceed. First, a basic description of horse racing."

Clocker began to give it. Barnes held him down to a single sentence—"To check reception and retention," he said.

The communication box on the desk lit up when Clocker repeated the sentence a few times, and a voice from the box said, "Increase output. Initial impression weak. Also wave distortion. Correct and continue."

Barnes carefully adjusted the dials and Clocker went on repeating the sentence, slowing down to the speed Barnes requested. He did it automatically after a while, which gave him a chance to think.

He had no plan to get Zelda out of here; he was improvising and he didn't like it. The setup still had him puzzled. He knew he wasn't dreaming all this, for there were details his imagination could never have supplied, and the notion of spirits with scientific devices would baffle even Oil Pocket.

Everybody else appeared to accept these men as the aliens they claimed to be, but Clocker, fearing a con he couldn't understand, refused to. He had no other explanation, though, no evidence of any kind except deep suspicion of any noble-sounding enterprise. In his harsh experience, they always had a profit angle hidden somewhere.

Until he knew more, he had to go along with the routine, hoping he would eventually find a way out for Zelda and himself. While he was repeating his monotonous sentence, he wondered what his body was doing back on Earth. Lying in a bed, probably, since he wasn't being asked to perform any physical jobs like Zelda's endless time-step.

That reminded him of Doc Hawkins and the psychiatrists. There must be some here; he wished vengefully that he could meet them and see what they thought of their theories now.

Then came the end of what was apparently the work day.

"We're making splendid progress," Barnes told him. "I know how tiresome it is to keep saying the same thing over and over, but the distance is such a great obstacle. I think it's amazing that we can even bridge it, don't you? Just imagine—the light that's reaching Earth at this very minute left our star when mammoths were roaming your western states and mankind lived in caves! And yet, with our thought-wave boosters, we are in instantaneous communication!"

The soap, Clocker thought, to make him feel he was doing something important.

"Well, you are doing something important," Barnes said, as though Clocker had spoken.

Clocker would have turned red if he had been able to. As it was, he felt dismay and embarrassment.

"Do you realize the size and value of this project?" Barnes went on. "We have a more detailed record of human society than Man himself ever had! There will be not even the most insignificant corner of