clear and his power unmistakable. Twissell knew that Harlan could say, at will: "I will no longer have anything to do with Cooper." Twissell knew Harlan could at any moment destroy Eternity by giving Cooper significant information concerning the memoir.
Harlan had known enough to do this yesterday. Twissell had thought to overwhelm him with the knowledge of the importance of his task, but if the Computer had thought to force Harlan into line in that way, he was mistaken.
Harlan had made his threat very clear with respect to Noys's safety, and Twissell's expression as he had barked, "Is safe," showed he realized the nature of the threat.
Harlan rose and followed Twissell.
Harlan had never been in the room they now entered. It was large and looked as though walls had been knocked down for its sake. It had been entered through a narrow corridor which had been blocked off by a force-screen that did not go down until after a pause sufficient for Twissell's face to be scanned thoroughly by automatic machinery.
The largest part of the room was filled by a sphere that reached nearly to the ceiling. A door was open, showing four small steps leading to a well-lit platform within.
Voices sounded from inside and even as Harlan watched, legs appeared in the opening and descended the steps. A man emerged and another pair of legs appeared behind him. It was Sennor of the Allwhen Council and behind him was another of the group at the breakfast table.
Twissell did not look pleased at this. His voice, however, was restrained. "Is the subcommittee still here?"
"Only we two," said Sennor casually, "Rice and myself. A beautiful instrument we have here. It has the level of complexity of a spaceship."
Rice was a paunchy man with the perplexed look of one who is accustomed to being right yet finds himself unaccountably on the losing side of an argument. He rubbed his bulbous nose and said, "Sennor's mind is running on space-travel lately."
Sennor's bald head glistened in the light. "It's a neat point, Twissell," he said. "I put it to you. Is space-travel a positive factor or a negative factor in the calculus of Reality?"
"The question is meaningless," said Twissell impatiently. "What type of space-travel in what society under what circumstances?"
"Oh, come. Surely there's something to be said concerning spacetravel in the abstract."
"Only that it is self-limiting, that it exhausts itself and dies out."
"Then it is useless," said Sennor with satisfaction, "and therefore it is a negative factor. My view entirely."
"If you please," said Twissell, "Cooper will be here soon. We will need the floor clear."
"By all means." Sennor hooked an arm under that of Rice and led him away. His voice declaimed clearly as they departed. "Periodically, my dear Rice, all the mental effort of mankind is concentrated on space-travel, which is doomed to a frustrated end by the nature of things. I would set up the matrices except that I am certain this is obvious to you. With minds concentrated on space, there is neglect of the proper development of things earthly. I am preparing a thesis now for submission to the Council recommending that Realities be changed to eliminate all space-travel eras as a matter of course."
Rice's treble sounded. "But you can't be that drastic. Space-travel is a valuable safety-valve in some civilizations. Take Reality 54 of the 290th, which I happen to recall offhand. Now there--"
The voices cut off and Twissell said, "A strange man, Sennor. Intellectually, he's worth two of any of the rest of us, but his worth is lost in leapfrog enthusiasms."
Harlan said, "Do you suppose he can be right? About space-travel, I mean."
"I doubt it. We'd have a better chance of judging if Sennor would actually submit the thesis he mentioned. But he won't. He'll have a new enthusiasm before he's finished and drop the old. But never mind--" He brought the flat of his hand against the sphere so that it rang resoundingly, then brought his hand back so that he could remove a cigarette from his lip. He said, "Can you guess what this is, Technician?"
"Harlan said, "It looks like an outsize kettle with a top."
"Exactly. You're right. You've got it. Come on inside."
Harlan followed Twissell into the sphere. It was large enough to hold four or five men, but the interior was absolutely featureless. The floor was smooth, the curved wall was broken by two windows. That was all.
"No controls?" asked Harlan.
"Remote controls," said Twissell. He ran his hand over the smoothness of the