The Human Edge

by Gordon R. Dickson

  The question acquired its full importance a couple of hours later, and forty thousand feet above nothing but ocean, when the main burners abruptly cut out.

  II

  Chuck wiped blood from his nose and shook his head to clear it. Underneath him, the life raft was rocking in soothing fashion upon the wide swell of the empty ocean; but, in spite of the fact that he knew better, he was having trouble accepting the reality of his present position.

  Everything had happened a little too fast. His training for emergency situations of this sort had been semi-hypnotic. He remembered now a blur of action in which he had jabbed the distress button to send out an automatic signal on his position and predicament. Just at that moment the standby burners had cut in automatically—which was where he had acquired the bloody nose, when the unexpected thrust slammed him against the controls. Then he had cut some forty-two various switches, got back to the main compartment, unharnessed his passengers, herded them into the escape hatch, blown them all clear, hit the water, inflated the life raft, and got them aboard it just as the escape hatch itself sank gracefully out of sight. The pot, of course, had gone down like so much pig iron when it hit.

  And here they were.

  Chuck wiped his nose again and looked at the far end of the rectangular life raft. Binichi, the closer of the two, was half-lolling, half-sitting on the curved muscle of his tail. His curved mouth was half-open as if he might be laughing at them. And indeed, thought Chuck, he very well might. Chuck and the envoy, adrift on this watery waste, in this small raft, were castaways in a situation that threatened their very lives. Binichi the Lugh was merely and comfortably back at home.

  "Binichi," said Chuck. "Do you know where we are?"

  The curved jaw gaped slightly wider. The Lugh head turned this way and that on the almost nonexistent neck; then, twisting, he leaned over the edge of the raft and plunged his whole head briefly under water like a duck searching for food. He pulled his head out again, now slick with moisture.

  "Yes," said Binichi.

  "How far are we from the coast of the south continent?"

  "A day's swim," said Binichi. "And most of a night."

  He gave his information as a simple statement of fact. But Chuck knew the Lugh was reckoning in his own terms of speed and distance, which were roughly twelve nautical miles an hour as a steady pace. Undoubtedly it could be done in better time if a Lugh had wished to push himself. The human Base had clocked some of this race at up to eighty miles an hour through the water for short bursts of speed.

  Chuck calculated. With the small outboard thrust unit provided for the raft, they would be able to make about four miles an hour if no currents went against them. Increase Binichi's estimate then by a factor of three—three days and nights with a slight possibility of its being less and a very great probability of its taking more. Thought of the thrust unit reminded him. He went to work unfolding it from its waterproof seal and attaching it in running position. Binichi watched him with interest, his head cocked a little on one side like an inquisitive bird's; but as soon as the unit began to propel the raft through the waves at its maximum cruising speed of four miles an hour, his attention disappeared.

  With the raft running smoothly, Chuck had another question.

  "Which way?"

  Binichi indicated with a short thick-muscled forearm, and Chuck swung the raft in nearly a full turn. A slight shiver ran down his spine as he did so. He had been heading away from land out into nearly three thousand miles of open ocean.

  "Now," said Chuck, locking the tiller, and looking at both of them. "It'll take us three days and nights to make the coast. And another three or four days to make it overland from there to the Base. The accident happened so quickly I didn't have time to bring along anything with which I could talk to my friends there." He paused, then added: "I apologize for causing you this inconvenience."

  "There is no inconvenience," said Binichi, and bubbled in his throat. The envoy neither moved nor answered.

  "This raft," said Chuck, "has food aboard it for me, but nothing, I think, that either one of you could use. There's water, of course. Otherwise, I imagine Binichi can make out with the sea all around him, the way it is; and I'm afraid there's not much to be done for you, Envoy, until we reach land. Then you'll be in Binichi's position of being able to forage for yourself."

  The envoy still did not answer. There was no way of knowing what he was thinking. Sitting facing the two of them, Chuck tried to imagine what it must be like for the Tomah, forced into a position inches away from his most deadly traditional enemy. And with the private preserves of that enemy, the deep-gulfed sea, source of all his culture's legends and terrors, surrounding him. True, the envoy was the pick of his people, a learned and intelligent being—but possibly there could be such a situation here that would try his self-control too far.

  Chuck had no illusion about his ability to cope, barehanded, with either one of his fellow passengers—let alone come between them if they decided on combat. At the same time he knew that if it came to that, he would have to try. There could be no other choice; for the sake of humanity's future here on this world, all three races would hold him responsible.

  The raft plodded on toward the horizon. Neither the Tomah nor Binichi had moved. They seemed to be waiting.

  They traveled all through the afternoon, and the night that followed. When the sun came up the following morning they seemed not to have moved at all. The sea was all around them as before and unchanging. Binichi now lay half-curled upon the yielding bottom of the raft, his eyes all but closed. The envoy appeared not to have moved an inch. He stood tensely in his corner, claw at half-cock, like a statue carved from his native rock.

  With the rising sun, the wind began to freshen. The gray rolling furrows of the sea's eternal surface deepened and widened. The raft tilted, sliding up one heavy slope and down another.

  "Binichi!" said Chuck.

  The Lugh opened his near eye lazily.

  "Is it going to storm?"

  "There will be wind," said Binichi.

  "Much wind?" asked Chuck—and then realized that his question was too general. "How high will the waves be?"

  "About my height," said Binichi. "It will be calmer in the afternoon."

  It began to grow dark rapidly after that. By ten o'clock on Chuck's chronometer it was as murky as twilight. Then the rain came suddenly, and a solid sheet of water blotted out the rest of the raft from his eyes.

  Chuck clung to the thrust unit for something to hang onto. In the obscurity, the motion of the storm was eerie. The raft seemed to plunge forward, mounting a slope that stretched endlessly, until with a sudden twist and dip, it adopted a down-slant to forward—and then it seemed to fly backward in that position with increasing rapidity until its angle was as suddenly reversed again. It was like being on a monstrous seesaw that, even as it went up and down, was sliding back and forth on greased rollers.

  At some indeterminate time later, Chuck began to worry about their being washed out of the raft. There were lines in the locker attached midway to the left-hand side of the raft. He crawled forward on hands and knees and found the box. It opened to his cold fingers, and he clawed out the coiled lines.

  It struck him then, for the first time, that on this small, circumscribed raft, he should have bumped into Binichi or the envoy in making his way to the box. He lifted his face to the wind and the rain and darkness, but it told him nothing. And then he felt something nudge his elbow.

  "He is gone," said the voice of the envoy's translator, in Chuck's ear.

  "Gone?" yelled Chuck above the storm.

  "He went over the side a little while ago."

  Chuck clung to the box as the raft suddenly reversed its angle.

  "How do you know?"

  "I saw him," said the envoy.

  "You—" Chuck yelled, "you can see in this?"

  There was a slight pause.

  "Of course," said the envoy. "Can't you?"

  "No.
" Chuck unwound the lines. "We better tie ourselves into the raft," he shouted. "Keep from being washed overboard."

  The envoy did not answer. Taking silence for assent, Chuck reached for him in the obscurity and passed one of the lines about the chitinous body. He secured the line tightly to the ring-handgrips fastened to the inner side of the raft's edge. Then he tied himself securely with a line around his waist to a handgrip further back by the thrust unit.

  They continued to ride the pitching ocean. After some time, the brutal beating of the rain slackened off; and a little light began to filter through. The storm cleared then, as suddenly as it had commenced. Within minutes the raft heaved upon a metal-gray sea under thinning clouds in a sky from which the rain had ceased falling.

  Teeth chattering, Chuck crawled forward to his single remaining passenger and untied the rope around him. The envoy was crouched down in his corner, his great claw hugging his back, as if he huddled for warmth. When Chuck untied him, he remained so motionless that Chuck was struck with the sudden throat-tightening fear that he was dead.

  "Are you all right?" asked Chuck.

  "Thank you," said the envoy; "I am in perfect health."

  Chuck turned away to contemplate the otherwise empty raft. He was, he told himself, doing marvelously. Already, one of his charges had taken off . . . and then, before he could complete the thought, the raft rocked suddenly and the Lugh slithered aboard over one high side.

  He and Chuck looked at each other. Binichi bubbled comfortably.

  "Looks like the storm's over," said Chuck.

  "It is blowing to the south of us now," said the Lugh.

  "How far are we from land, now?"

  "We should come to it," said Binichi, "in the morning."

  Chuck blinked a little in surprise. This was better time than he had planned. And then he realized that the wind was blowing at their backs, and had been doing so all through the storm. He looked up at the sky. The sun was past its zenith, and a glance at his watch, which was corrected for local time, showed the hands at ten minutes to three. Chuck turned his attention back to Binichi, revolving the phraseology of his next question in his mind.

  "Did you get washed overboard?" he asked, at last.

  "Washed overboard?" Binichi bubbled. "I went into the water. It was more pleasant."

  "Oh," said Chuck.

  They settled down once more to their traveling.

  A little over an hour later the raft jarred suddenly and rocked as if, without warning, it had found a rock beneath it, here in the middle of the ocean. For a second Chuck entertained the wild idea that it had. But such a notion was preposterous. There were undersea mountains all through this area, but the closest any came to the surface was a good forty fathoms down. At the same time the envoy's claw suddenly shot up and gaped above him, as he recoiled toward the center of the boat; and, looking overboard, Chuck came into view of the explanation for both occurrences.

  A gray back as large around as an oil drum and ten to twelve feet in length was sliding by about a fathom and a half below them. At a little distance off Chuck could make out a couple more. As he watched, they turned slowly and came back toward the raft again.

  Chuck recognized these sea-creatures. He had been briefed on them. They were the local counterpart of the Earthly shark—not as bloodthirsty, but they could be dangerous enough. They had wide catfishlike mouths, equipped with cartilaginous ridges rather than teeth. They were scavengers, rather than predators, generally feeding off the surface. As he watched now, the closest rose slowly to the surface in front of him, and suddenly an enormous jaw gaped a full six feet in width and closed over the high rim of the raft. The plastic material squealed to the rubbing of the horny ridges, giving but not puncturing. Temporarily defeated, the jaws opened again and the huge head sank back under the water.

  Chuck's hand went instinctively to his belt for the handgun that was, of course, not there.

  The raft jolted and twisted and rocked for several moments as the creatures tried to overturn it. The envoy's claw curved and jerked this way and that above him, like a sensitive antenna, at each new sound or jolt. Binichi rested lazy-eyed on the raft's bottom, apparently concerned only with the warmth of the sun upon his drying body.

  After several minutes, the attacks on the raft ceased and the creatures drew off through the water. Chuck could catch a glimpse of them some thirty yards or so off, still following. Chuck looked back at Binichi, but the Lugh had his eyes closed as if he dozed. Chuck drew a deep breath and turned to the envoy.

  "Would you like some water?" he asked.

  The envoy's claw had relaxed slightly upon his back. He turned his head toward Chuck.

  "If you have any you do not desire yourself," he said.

  Chuck got out the water, debated offering some to the Lugh out of sheer form and politeness, then took his cue from the fact that Binichi appeared asleep, and confined his attentions to the envoy and himself. It surprised him now to remember that he had not thought of water up until this moment. He wondered if the Tomah had been suffering for it in silence, too polite or otherwise to ask for some.

  This latter thought decided him against eating any of the food that the boat was also provided with. If they would reach land inside of another twelve or fourteen hours, he could last until then. It would hardly be kind, not to say politic, to eat in front of the Tomah when nothing was available for that individual. Even the Lugh, if he had eaten at all, had done so when he was out of the raft during the night and storm, when they could not see him.

  Chuck and the envoy drank and settled down again. Sundown came quickly; and Chuck, making himself as comfortable as possible, went to sleep.

  * * *

  He woke with a start. For a second he merely lay still on the soft, yielding bottom of the raft without any clear idea as to what had brought him into consciousness. Then a very severe bump from underneath the raft almost literally threw him up into a sitting position.

  The planet's small, close moon was pouring its brilliant light across the dark waters, from a cloudless sky. The night was close to being over, for the moon was low and its rays struck nearly level on the wave tops. The sea had calmed, but in its closer depths were great moving streaks and flashes of phosphorescence. For a moment these gleams only baffled and confused his eyes; and then Chuck saw that they were being made by the same huge scavengers that had bothered the raft earlier—only now there were more than a dozen of them, filling the water about and underneath the raft.

  The raft rocked again as one of them struck it once more from below.

  Chuck grabbed at the nearest ring-handhold and glanced at his fellow passengers. Binichi lay as if asleep, but in the dark shadow of his eye-sockets little reflected glints of light showed where his eyeballs gleamed in the darkness. Beyond him, the envoy was fully awake and up on all four feet, his claw extended high above him, and swaying with every shock like the balancing pole of a tightrope walker. His front pair of handed limbs were also extended on either side as if for balance. Chuck opened his mouth to call to the Tomah to take hold on one of the handgrips.

  At that moment, however, there rose from out of the sea at his elbow a pair of the enormous ridged jaws. Like the mouth of a trout closing over a fly, these clamped down, suddenly and without warning, on the small, bright metal box of the thrust unit where it was fastened to the rear end of the raft. And the raft itself was suddenly jerked and swung as the sea-creature tore the thrust unit screeching from its moorings into the sea. The raft was upended by the force of the wrench; and Chuck, holding on for dear life from sliding into the sea, saw the creature that had pulled the unit loose release it disappointedly, as if sensing its inedibility. It glittered down through the dark waters, falling from sight.

  The raft slammed back down on the watery surface. And immediately on the heels of this came the sound of a large splash. Jerking his head around, Chuck saw the envoy struggling in the ocean.

  His black body glittered among the waves, his t
hrashing limbs kicking up little dashes and glitters of phosphorescence. Chuck hurled himself to the far end of the raft and stretched out his hand, but the Tomah was already beyond his reach. Chuck turned, and dived back to the box at midraft, pawing through it for the line he had used to tie them in the boat earlier. It came up tangled in his hands. He lunged to the end of the raft nearest the envoy again, trying to unravel the line as he did so.

  It came slowly and stubbornly out of its snarl. But when he got it clear at last and threw it, its unweighted end fell little more than halfway of the widening distance between the raft and the Tomah.

  Chuck hauled it in, in a frenzy of despair. The raft, sitting high in the water, was being pushed by the night wind farther from the envoy with every second. The envoy himself had in all this time made no sound, only continuing to thrash his limbs in furious effort. His light body seemed in no danger of sinking; but his narrow limbs in uncoordinated effort barely moved him through the water—and now the scavengers were once more beginning to enter the picture.

  These, like any fish suddenly disturbed, had scattered at the first splash of the Tomah's body. For a short moment it had seemed that they had been frightened away entirely. But now they were beginning to circle in, moving around the envoy, dodging close, then flirting away again—but always ending up a little closer than before.

  Chuck twisted about to face Binichi.

  "Can't you do something?" he cried.

  Binichi regarded him with his race's usual unreadable expression.

  "I?" he said.

  "You could swim to him and let him hang on to you and tow him back," said Chuck. "Hurry!"

  Binichi continued to look at him.

  "You don't want the Tomah eaten?" he said at last.

  "Of course not!"

  "Then why don't you bring him back yourself to this thing?"