He looked for his hat, but did not find it, then stepped around back of the raised platform, seeking the exit he remembered. He nearly b.u.mped intoDiktor .

"Ah, there you are!" the older man greeted him."Fine! Fine! Now there is just one more little thing to take care of, then we will be all squared away. I must say I am pleased with you, Bob, very pleased in-deed."

"Oh, you are, are you?" Bob faced him truculently. "Well, it's too bad I can't say the same about you! I'm not a d.a.m.n bit pleased. What was the idea of shoving me intothat.. .

that daisy chain without warning me? What's the meaning of all this nonsense? Why didn't you warn me?"

"Easy, easy," said the older man, "don't get excited. Tell the truth now -if I had told you that you were going back to meet yourself face to face, would you have believed me?

Come now, 'fess up."

Wilsonadmitted that he would not have believed it.

"Well, then,"Diktor continued with a shrug, "there was no pointin me telling you,was there? If I had told you, you would not have believed me, which is another way of saying that you would have believed false data. Is it not better to be in ignorance than to believe falsely?"

"I suppose so, but-"

"Wait! I did not intentionally deceive you. I did not deceive you at all. But had I told you the full truth, you would have been deceived because you would have rejected the truth. It was better for you to learn the truth with your own eyes. Otherwise-"

"Wait a minute! Wait a minute!"Wilson cut in. "You're getting me all tangled up. I'm willingt'o let bygones be bygones, if you'll come clean with me. Why did you send me back at all?"

"'Let bygones be bygones,'"Diktor repeated."Ah, if we only could! But we can't. That's why I sent you back-in order that you might come through the Gate in the first place."

"Huh? Wait a minute-I alreadyhad come through the Gate."

Diktorshook his head. "Had you, now? Think a moment. When you got back into your own time and your own place you found your earlier self there, didn't you?"

"Mmmm-yes."

~~He_yo~rearlier self-had not yet been through the Gate, had he?" No.1- "How could you have been through the Gate, unless you persuaded him togo through the Gate?"

Bob Wilson's head was beginning to whirl. He was beginning to won-der who did what to whom and who got paid. "But that's impossible! You are telling me that I did something because I was going to do something."

"Well, didn't you? You were there."

"No, I didn't-no. . . well, maybe I did, but it didn'tfeel like it."

"Why should you expect it to? It was something totally new to your experience."

'But.. .but-"Wilson took a deep breath and got control of himself.

Then he reached back into his academic philosophical concepts and produced the notion he had been struggling to express. "It denies all reasonable theories of causation. You would have me believe that causa-tion can be completely circular. I went through because I came back from going through to persuade myself to go through. That's silly."

"Well, didn't you?"

Wilsondid not have an answer ready for that one.Diktor continued with, "Don't worry about it. The causation you have been accustomed to is valid enough in its own field but is simply a special case under the general case.Causation in a plenum need not be and is not limited by a man~iperception of duration."

Wilsonthought about that for a moment. It sounded nice, but there was something slippery about it. "Just a second," he said."How about entropy? You can't get around entropy."

"Oh, for heaven's sake," protestedDiktor , "shut up, will you? You remindmeof the mathematician who proved that airplanes couldn't fly." He turned and started out the door. "Come on. There's work to be done."

Wilsonhurried after him. "Dammit, you can't do this to me. What happened to the other two?"

"The other two what?"

"The other two of me?Where are they? How am I ever going to get unsnarled?"

"You aren't snarled up. You don't feel like more than one person, do you?"

"No, but-"

"Then don't worry about it."

"But I've got to worry about it. What happened to the guy that came through just ahead of me?"

"You remember, don't you? However-"Diktor hurried on ahead, led him down a pa.s.sageway, and dilated a door. "Take a look inside," he directed.

Wilsondid so. He found himself looking into a small windowless unfurnished room, a room that he recognized. Sprawled on the floor, snoring steadily, was another edition ofhimself .

"When you first came through the Gate," explainedDiktor at his elbow, "I brought you in here, attended to your hurts and gave you a drink. The drink contained a soporific which will cause you to sleep about thirty-six hours, sleep that you badly needed. When you wake up, I will giveyou breakfast and explain to you what needs to be done."

Wilson's head started to ache again. "Don't do that," he pleaded. "Don't refer to that guy as if he were me.Thisi1sme, standing here."

"Have it your own way," saidDiktor . "That is the man youwere. You remember the things that are about to happen to him,don't you?"

"Yes, but it makes me dizzy. Close the door, please."

"Okay," saidDiktor , and complied. "We've got to hurry, anyhow. Once a sequence like this is established there is no time to waste. Come on." He led the way back to the Hall of the Gate.

"I want you to return to the twentieth century and obtain certain things for us, things that can't be obtained on this side but which will be very useful to us in, ah, developing-yes, that is the word- clevelopingthis country."

"What sort of things?"

"Quite a number of items.I've prepared a list for you-certain refer-ence books, certain items of commerce. Excuse me, please. I must adjust the controls of the Gate." He mounted the raised platform from the rear.Wilson followed himand'found that the structure was boxlike, open at the top and had a raised floor. The Gate could be seen by looking over the high sides.

The controls were unique.

Four colored spheres the size of marbles hung on crystal rods arranged with respect to each other as the four major axes of a tetrahedron. The three spheres which bounded the base of the tetrahedron were red, yellow and blue; the fourth at the apex was white. "Three spatial controls, one time control,"

explainedDiktor . "It's very simple. Using here-and-now as zero reference, displacing any control away from the center moves the other end of the Gate farther from here-and-now. Forward or back, right or left, up or down, past or future-they are all controlled by moving the proper sphere in or out on its rod."

Wilsonstudied the system. "Yes," he said, "but how do you tell where the other end of the Gate is?Or when? I don't see any graduations."

"You don't need them. You can see where you are. Look." He touched a point under the control framework on the side toward the Gate. A panel rolled back andWilson saw there was a small image of the Gate itself.Diktor made another adjustment andWilson found that he could see through the image.

He was gazing into his own room, as if through the wrong end of a telescope. He could make out two figures, but the scale was too small for himto see clearly what they were doing, nor could he tell which editions of himself were there present-if they were in truth himself! He found it quite upsetting. "Shut it off," he said.

Diktordid so and said, "I must not forget to give you your list." He fumbled in his sleeve and produced a slip of paper which he handed toWilson. "Here-take it."

Wilsonaccepted it mechanically and stuffed it into his pocket. "See here," he began, "everywhere I go I keep running into myself. I don't like it at all. It's disconcerting. I feel like a whole batch of guinea pigs. I don't half-understand what this is all about and now you want to rush me through the Gate again with a bunch of half-baked excuses. Come clean. Tell me what it's all about."

Diktorshowed temper in his face for the first time. "You are a stupid and ignorant young fool. I've told you all that you are able to understand. This is a period in history entirely beyond your comprehension. It would take weeks before you would even begin to understand it. I am offering you half a world in return for a few hours' cooperation and you stand there arguing about.i.t. Stow it, I tell you. Now-where shall we set you down?" He reached for the controls.

"Get away from those controls!"Wilson rapped out. He was getting the glimmering of an idea. "Who are you, anyhow?"

"Me? I'mDiktor ."

"That's not what I mean and you know it. How did you learn English?"

Diktordid not answer. His face became expressionless.

"Go on,"Wilson persisted. "You didn't learn it here; that's a cinch. You're from the twentieth century, aren't you?"

Diktorsmiled sourly. "I wondered how long it would take you to figure that out."

Wilsonnodded. "Maybe I'm not bright, but I'm not as stupid as you think I am. Come on. Give me the rest of the story."

Diktorshook his head. "It's immaterial. Besides, we're wasting time."

Wilsonlaughed. "You've tried to hurry me with that excuse once too often. How can wewask time when we havethat?" He pointed to the controls and to the Gate beyond it. "Unless you lied to me, we can use any slice of time we want to, any time. No, I think I know why you tried to rush me. Either you want to get me out of the picture here, or there is something devilishly dangerous about the job you want me to do. And I know how to settle it-you're going with me!"

"You don't know what you're saying,"Diktor answered slowly. "That's impossible. I've got to stay here and manage the controls."

"That's just what you aren't going to do. You could send me throughand lose me. I prefer to keep you in sight."

"Out of the question," answeredDiktor . "You'll have to trust me." He bent over the controls again.

"Get away from there!" shoutedWilson. "Back out of there before Ibop you one." UnderWilson 's menacing fistDiktor withdrew from the control pulpit entirely. "There. That's better," he added when both of them were once more on the floor of the hall.

The idea which had been forming in his mind took full shape. The controls, he knew, were still set on his room in the boardinghouse where he lived-or had lived-back in the twentieth century. From what he had seen through the speculum of the controls, the time control was set to take him right back to the day in1952from which he had started. "Stand there," he commandedDiktor , "I want to see something."

He walked over to the Gate as if to inspect it. Instead of stopping when he reached it, he stepped on through.

He was better prepared for what he found on the other side than he had been on the two earlier occasions of time translation-"earlier" in the sense of sequence in his memory track. Nevertheless it is never too easy on the nerves to catch up with one's self.

For he had done it again.He was back in his own room, but there were two of himself there before him.

They were very much preoccupied with each other; he had a few seconds in which to get them straightened out in his mind. One of them had a beautiful black eye and a badly battered mouth. Beside that he was very much in need of a shave. That tagged him. He had been through the Gate at least once.

The other, though somewhat in need of shaving himself, showed no marks of a fist fight.

He had them sorted out now, and knew where andwhen he was. It was all still mostly d.a.m.nably confusing, but after former-no, notformer, he amended-other experiences with time translation he knew better what to expect. He was back at the beginning again; this time he would put a stop to the crazy nonsense once and for all.

The other two were arguing. One of them swayed drunkenly toward the bed. The other grabbed him by the arm. "You can't do that," he said.

"Let him alone!" snappedWilson .

The othertwo swung around and looked him over.Wilson watched the more sober of the pair size him up, saw his expression of amazement change to startled recognition. The other, the earliest Wilson, seemed to havetrouble in focusing on him at all. "This going to be a job," thoughtWilson . "The man is positively stinking." He wondered why anyone would be foolish enough to drink on an empty stomach. It was not onlystupid, it was a waste of good liquor.

He wondered if they had left a drink for him.

"Who are you?" demanded his drunken double.

Wilsonturned to "Joe." "He knows me," he said significantly.

"Joe," studied him. "Yes," he conceded, "yes, I suppose I do. But what the deuce are you here for?

And why are you trying to bust up the plan?"

Wilsoninterrupted him. "No time for long-winded explanations, I know more about it than you do-you'll concede that-and my judgment is bound to be better than yours. He doesn't go through the Gate."

"I don't concede anything of the sort-"

The ringing of the telephone checked the argument.Wilson greeted the interruption with relief, for he realized that he had started out on the wrong tack. Was it possible that he was really as dense himself as this lug appeared to be? Didhe look that way to other people? But the time was too short for self-doubts and soul-searching. "Answer it!" he commanded Bob (Boiled)Wilson .

The drunk looked belligerent, but acceded when he saw that Bob (Joe)Wilson was about tobeathim toit.

"h.e.l.lo.. . . Yes. Who is this?

h.e.l.lo.. . . h.e.l.lo!"

"Who was that?" asked "Joe."

"Nothing.Some nut with a misplaced sense of humor." The telephone rang again. "There he is again."

The drunk grabbed the phone before the others could reachit."Listen, you b.u.t.terfly-brained ape! I'm a busy man and this isnot a public telephone.. . . Huh? Oh, it's you, Genevieve-"Wilson paid little attention to the telephone conversation-he had heard it too many times before, and he had too much on his mind. His earliestpersona was much too drunk to be reasonable, he realized; he must concentrate on some argument that would appeal to "Joe"-otherwise he was outnumbered."-Huh? Oh, sure!" the call concluded. "Anyhow, I'll see you tonight. 'By."

Now was the time, thoughtWilson , before this dumb yap can open his mouth. What would he say?

What would sound convincing?

But the boiled edition spoke first. "Very well, Joe," he stated, "I'm ready to go if you are."

"Fine!" said "Joe.""Just step through. That's all there is toit."

This was getting out of hand, not the way he had plannedit at all. "No, __).

youdon't!" he barked and jumped in front of the Gate. He would have to make them realize, and quickly.

But he got no chance to do so. The drunk cussed him out,then swung on him; his temper snapped. He knew with sudden fierce exultation that he hadbeen wanting to take a punch at someone for some time.

Who did they think they were to be taking chances with his future?