Time and Time Again. Robert Silverberg

get throat cancer from all this talking, Mahler thought. And that’ll mean the nuisance of an operation. But if I don’t do this job, someone else will have to.

      Mahler heard the protesting screams of the time jumper impassively. In the beginning he had been ready to resign when he first witnessed the inevitable frenzied reaction of jumper after jumper as the guards dragged them away, but eight years had hardened him.

      They had given him the job because he was hard, in the first place. It was a job that called for a hard man. Condrin, his predecessor, had not been the same sort of man Mahler was, and for that reason Condrin was now himself on the Moon. He had weakened after heading the Bureau for a year and had let a jumper go; the jumper had promised to secrete himself at the tip of Antarctica, and Condrin, thinking that Antarctica was as safe as the Moon, had foolishly released him. That was when they called Mahler in. In eight years Mahler had sent four thousand men to the Moon. (The first was the runaway jumper, intercepted in Buenos Aires after he had left a trail of disease down the hemisphere from Appalachia to Argentine Protectorate. The second was Condrin.)

      It was getting to be a tiresome job, Mahler thought. But he was proud to hold it. It took a strong man to do what he was doing. He leaned back and awaited the arrival of the next jumper.

      The door slid smoothly open as the burly body of Dr. Fournet, the Bureau’s chief medical man, broke the photo-electronic beam. Mahler glanced up. Fournet carried a time-rig dangling from one hand.

      “Took this away from our latest customer,” Fournet said. “He told the medic who examined him that it was a two-way rig, and I thought I’d bring it to show you.”

      Mahler came to full attention quickly. A two-way rig? Unlikely, he thought. But it would mean the end of the dreary jumper prison on the Moon if it were true. Only how could a two-way rig exist?

      He reached out and took it from Fournet. “It seems to be a conventional twenty-fourth century type,” he said.

      “But notice the extra dial here,” Fournet said, pointing. Mahler peered and nodded.

      “Yes. It seems to be a two-way rig. But how can we test it? And it’s not really very probable,” Mahler said. “Why should a two-way rig suddenly show up from the twenty-fourth century when no other traveler’s had one? We don’t even have two-way time travel ourselves, and our scientists don’t think it’s possible. Still,” he mused, “it’s a nice thing to dream about. We’ll have to study this a little more closely. But I don’t seriously think it’ll work. Bring him in, will you?”

      As Fournet turned to signal the guards, Mahler asked him, “What’s his medical report, by the way?”

      “From here to here,” Fournet said somberly. “You name it, he’s carrying it. Better get him shipped off to the Moon as soon as possible. I won’t feel safe until he’s off this planet.” The big medic waved to the guards.

      Mahler smiled. Fournet’s overcautiousness was proverbial in the Bureau. Even if a jumper were to show up completely free from disease, Fournet would probably insist that he was carrying everything from asthma to leprosy.

      The guards brought the jumper into Mahler’s office. He was fairly tall, Mahler saw, and young. It was difficult to see his face clearly through the dim plate of the protective spacesuit all jumpers were compelled to wear, but Mahler could tell that the young time-jumper’s face had much of the lean, hard look of Mahler’s own. It seemed that the jumper’s eyes had widened in surprise as he entered the office, but Mahler was not sure.

      “I never dreamed I’d find you here,” the jumper said. The transmitter of the spacesuit brought his voice over deeply and resonantly. “Your name is Mahler, isn’t it?”

      “That’s right,” Mahler agreed.

      “To go all these years—and find you. Talk about improbabilities!”

      Mahler ignored him, declining to take up the gambit. He had found it was good practice never to let a captured jumper get the upper hand in conversation. His standard procedure was firmly to explain to the jumper the reasons why it was imperative that he be sent to the Moon, and then send him, as quickly as possible.

      “You say this is a two-way time-rig?” Mahler asked, holding up the flimsy-looking piece of equipment.

      “That’s right,” the other agreed. “Works both ways. If you pressed the button, you’d go straight back to 2360 or thereabouts.”

      “Did you build it?”

      “Me? No, hardly,” said the jumper. “I found it. It’s a long story, and I don’t have time to tell it. In fact, if I tried to tell it, I’d only make things ten times worse than they are, if that’s possible. No. Let’s get this over with, shall we? I know I don’t stand much of a chance with you, and I’d just as soon make it quick.”

      “You know, of course, that this is a world without disease—” Mahler began sonorously.

      “And that you think I’m carrying enough germs of different sorts to wipe out the whole world. And therefore you have to be absolutely inflexible with me. I won’t try to argue with you. Which way is the Moon?”

      Absolutely inflexible. The phrase Mahler had used so many times, the phrase that summed him up so neatly. He chuckled to himself; some of the younger technicians must have tipped the jumper off about the usual procedure, and the jumper was resigned to going peacefully, without bothering to plead. It was just as well.

       Absolutely inflexible.

      Yes, Mahler thought, the words fit him well. He was becoming a stereotype in the Bureau. Perhaps he was the only Bureau chief who had never relented and let a jumper go. Probably all the others, bowed under the weight of the hordes of curious men flooding in from the past, had finally cracked and taken the risk. But not Mahler; not Absolutely Inflexible Mahler. He knew the deep responsibility that rode on his shoulders, and he had no intention of failing what amounted to a sacred trust. His job was to find the jumpers and get them off Earth as quickly and as efficiently as possible. Every one. It was a task that required unsoftening inflexibility.

      “This makes my job much easier,” Mahler said. “I’m glad I won’t have to convince you of the necessity of my duty.”

      “Not at all,” the other agreed. “I understand. I won’t even waste my breath. You have good reasons for what you’re doing, and nothing I say can alter them.” He turned to the guards. “I’m ready. Take me away.”

      Mahler gestured to them, and they led the jumper away. Amazed, Mahler watched the retreating figure, studying him until he could no longer be seen.

      If they were all like that, Mahler thought.

       I could have got to like that one. That was a sensible man—one of the few. He knew he was beaten, and he didn’t try to argue in the face of absolute necessity. It’s too bad he had to go; he’s the kind of man I’d like to find more often these days.

      But I mustn’t feel sympathy, Mahler told himself.

      He had performed his job so well so long because he had managed to suppress any sympathy for the unfortunates he had to condemn. Had there been someplace else to send them—back to their own time, preferably—he would have been the first to urge abolition of the Moon prison. But, with no place else to send them, he performed this job efficiently and automatically.

      He picked up the jumper’s time-rig and examined it. A two-way rig would be the solution, of course. As soon as the jumper arrives, turn him around and send him back. They’d get the idea soon enough. Mahler found himself wishing it were so; he often wondered what the jumpers stranded on the Moon must think of him.

      A two-way rig could change the world completely; its implications were staggering. With men able to move with ease backward and forward in time, past, present, and future would blend into one mind-numbing new entity. It was impossible to conceive of the world as it would be, with free passage in either direction.

      But