How strange ’Anny ’Alehouse looked this time! His lifting sac had always been disagreeably knobby and lacking in any decent coloration, but now it was swollen immensely and knobbier than ever. Charlie might not have recognized him if there had been more than one other like him in all the world to confuse him with. But it was ’Anny all the same. The swarm swallowed hydrogen and dropped to meet him, singing the song of welcome Charlie had invented for his friend.
Dalehouse was almost as overjoyed to see the swarm again as the swarm was to see Dalehouse. It had been a long time! After the storm there had been the time for cleaning up; and before they were through the second ship had dropped out of the tachyon charge state to bring them new people and a whole host of new equipment. That was fine enough, but to make them welcome and to integrate the new things into the old had taken time — more than time. Some of what they had brought had been gifts for the balloonists, and to deliver the gifts meant more load had to be lifted, which meant a bigger cluster of balloons, which meant making and filling new ones and redesigning the ballasting system to compensate. Danny was far from sure it had been worth it.
But there had also been half a kilo of microfiches from the Double-A-L, and those had been worth a lot. Professor D. Dalehouse was now a name to conjure with among xenobiologists. They had quoted his reports in every paper. And the papers themselves had given much to think of. Among the conferees at Michigan State a battle had raged. In the evolution of the balloonists, where was Darwin? When a female scattered her filamentary eggs into the air of Klong like the burst of a milkweed pod and all the males spewed sperm at once, where was the selection of the fittest? What kind of premium on strength, agility, intelligence, or sexual attraction would make each generation somehow infinitesimally more “fit” than the one before in an ontogeny where all the males spurted all their genes into a cloud of mixed female genetic material, with the wind for a mixer and random chance deciding who fathered which on whom? The balloonists kept no Leporello lists. Well any one of them might have fathered a mille-tre; but if so he never knew it.
Charlie could have settled the debate if asked. All the balloonists were sexually mature as soon as they were able to drop their spider-silk parachute threads and float free. But all balloonists were not equal in size.
The older, the bigger. The bigger, the more sperm or eggs they flung into the collective pool. Human beings, by contrast, cease to play a part in evolution before half their lives are over. Wisdom does not come at twenty-five. By the time there is a significant difference between a Da Vinci and a dolt the days of breeding are over. Selection plays no further part. Nor does it in resistance to the degenerative diseases of the old, which is why in two million years the human race has not selected against cancer, arthritis, or arteriosclerosis. Raunchy young cells have been disciplined by the stresses of fifty thousand generations. But past the breeding age the cell runs out of programming. It doesn’t know what to do next.
It begins to fall apart.
With the balloonists it was different. The Charlie-sized giants among them sprayed half a liter of mist-of-sperm into each receptive cloud of eggs, while the tiny first-swarm male balloonets squeezed out hardly a drop. The Charlies had proved their fitness to survive by the most conclusive of tests: they had survived.
Dalehouse was eager to try to settle questions like that as he called to Charlie and swung in to meet him, even more eager to try the new language elements the big computers on Earth had generated for him. What was occupying most of his attention, though, was his gift from Earth. Like the swarm’s greeting song, it was an example of the thing his society did best. It was a weapon.
It was not entirely a free gift, Dalehouse reflected, but then there is nothing without a price. Charlie’s song cost him some of his reserve of lifting gas, as the songs that were their life always cost the swarm. If they sang, they vented gas. If they vented gas, they lost lift. If they lost lift, sooner or later they drifted helplessly down to the eager mouths on the surface and were eaten. Or, almost as bad, had to live on there, helpless and voiceless, until they were able to accumulate and dissociate enough water molecules to recharge their stocks — quickly if Kung was kind enough to flare for them, painfully slowly otherwise. It was a price they paid gladly. To live was to sing; to be quiet was to be dead anyway. But in the end, for most of them, it was the price of their lives.
The price of the gift Danny Dalehouse brought was the lives of the five balloonists who had been sent back to Earth in the return capsule.
The designers at Camp Detrick had made good use of the samples. The two who were dead on arrival were dissected at once. Those were the lucky ones. The other three were studied in vivo. The biggest and strongest of them lasted two weeks.
The Camp Detrick experimenters also had a price to pay, because eight of them came down with the Klongan hives, and one had the severe misfortune to have his skull fill up with antigenic fluid, so that he would never again for the rest of his life stress an experimental subject. Or, indeed, hold a fork by himself. But probably the balloonists who had been his subjects would not have thought that price unfair.
Danny Dalehouse unslung the lightweight carbine from one shoulder and practiced aiming it. Its stock was metal shell, and sintered metal at that; it weighed hardly a kilogram, but half that weight was in high-velocity bullets. It was poor design. He felt sure the recoil would kick him halfway across the sky if he fired it, and anyway, what was the use of high-velocity bullets? What target was there in the Klongan air that needed that sort of impact to destroy it? But the word from Earth brought by the reinforcement party that had been labeled a UN peacekeeping committee was that it must be carried. So he carried it.
He put it back and, somewhat uncomfortably, took Charlie’s gift off the other shoulder. Now, that was more like it. Somebody somewhere had understood what Charlie’s people could do and what they needed in order to protect themselves against predators. It weighed even less than the carbine, and it contained no propellants at all. Its tiny winch could be operated by the claws of a Charlie to tighten a long-lasting elastic cord. Its trigger was sized to fit a balloonist, and what it fired was a cluster of minute needles or, alternatively, a capsule of some sort of fluid. Needles were for airborne predators. The fluid, or so Danny was told, was against creatures like the crabrats, if a balloonist was forced down and needed defense; and it would only incapacitate them without killing.
It would tax all of Dalehouse’s linguistics to convey any part of that to Charlie, but the way to get it done was to begin. He held the crossbow up and sang, carefully attending to the notes he had been taught by the computers at Texas A M. “I have brought you a gift.”
Charlie responded with a burst of song. Dalehouse could understand no more than a few phrases, but clearly it was a message of gratitude and polite inquiry; and anyway, the little tape recorder at his belt was getting it all down for later study.
Danny moved on to the next sentence he had been taught. “You must come with me to find a ha’aye’i. ” That was hard to sing; English does not come with glottal stops, and practicing it for an hour had left Dalehouse’s throat sore. But Charlie seemed to understand, because the song of thanks changed to a thin melody of concern. Danny laughed. “Do not fear,” he sang. “I will be a ha’aye’i to the ha’aye’i. We will destroy them with this gift, and the swarm will no more need to fear.”