"We've decided to add a further precaution at the last moment," the old man said. "That is, the scientists have suggested it and I have—er—I have given my approval."

The last remark was added with a slight questioning note as the Secretary-General of the United Nations looked back rapidly at the black market princes on the couches behind him. Since they stared back stonily, but offered no objection, he coughed in relief and returned to Alben.

"I am sure, young man, that I don't have to go into the details of your instructions once more. You enter the time machine and go back the duration for which it has been preset, a hundred and thirteen years, to the moment after the Guided Missile of 1976 was launched. It is 1976, isn't it?" he asked, suddenly uncertain.

"Yes, sir," one of the technicians standing by the time machine said respectfully. "The experiment with an atomic warhead guided missile that resulted in the Blight was conducted on this site on April 18, 1976." He glanced proudly at the unemotional men on the couches, very much like a small boy after completing a recitation before visiting dignitaries from the Board of Education.

"Just so." Abd Sadha nodded. "April 18, 1976. And on this site. You see, young man, you will materialize at the very moment and on the very spot where the remote-control station handling the missile was—er—handling the missile. You will be in a superb position, a superb position, to deflect the missile in its downward course and alter human history for the better. Very much for the better. Yes."

He paused, having evidently stumbled out of his thought sequence.

"And he pulls the red switch toward him," Gomez, the dandelion-root magnate, reminded him sharply, impatiently.

"Ah, yes, the red switch. He pulls the little red switch toward him. Thank you, Mr. Gomez, thank you very much, sir. He pulls the little red switch on the green instrument panel toward him, thus preventing the error that caused the missile to explode in the Brazilian jungle and causing it, instead, to explode somewhere in the mid-Pacific, as originally planned."

The Secretary-General of the United Nations beamed. "Thus preventing the Blight, making it nonexistent, as it were, producing a present-day world in which the Blight never occurred. That is correct, is it not, gentlemen?" he asked, turning anxiously again.