For the change must be gradual, surely. A wingfinger couldn’t go in one generation from having a flying membrane attached to its elongated digit to having a swimming paddle. No, rather, it must happen a little at a time, with wingfingers perhaps swimming on the surface of the water, and those with a thicker membrane being the best paddlers, and therefore getting the most fish. A thick membrane would be an advantage, then, over a thin one, in an environment where swimming was more profitable than flying.
And those that had the advantage would live longer and have more children.
And the children would tend to take after the parents, just as, just as, just as…
Just as Governor Rodlox and Emperor Dybo took after Empress Lends, or, or, or…
Or as I take after Afsan and Novato.
And in each subsequent generation, the favorable trait would become concentrated more and more, until it became the norm.
An entire population of wingfingers with paddles instead of flying membranes.
Or with walking stilts instead of wings.
A selection process, imposed by the environment: a natural selection. Toroca continued to pace.
Babnol was eighteen kilodays old.
Toroca understood this; knew the significance of the figure.
A year was about eighteen thousand days long.
And, therefore, Babnol was now about one year old.
Toroca felt a little tingling as he contemplated what that meant.
Sexual maturity.
The ripening. The receptivity.
Soon, Babnol would call for a mate.
Very soon.
Toroca had longed after Babnol since shortly after they had first met, and at last he could bear it no more. She was coming close now, down the cramped corridor beneath the decks of the Dasheter. She’d have to squeeze by him in this narrow space to get where she wanted to go. Of course, as was the custom, she would avert her eyes for the brief time during which she would be invading his territory. He was supposed to do the same.
Closer now. Closer. Just a few paces away.
He could smell her pheromones—the normal scent of all Quintaglios; the undercurrent of her femaleness, growing more pronounced day by day as she moved toward receptivity; the subtle tinge that indicated that she hadn’t eaten recently; the slight whiff of abasement at having to encroach on another’s territory.
She looked to one side and stepped abreast of him.
Toroca lifted his arm, ever so slightly, so that the back of his hand slid smoothly, gently, across her flank as she passed.
Her claws slipped out into the light of day, but she said not a word.
Not a word.
Toroca was pacing the decks of the Dasheter again, his theory bothering him.
Yes, evolution explained the bizarre wingfinger-derived life-forms of the south pole. Yes, the mechanism of natural selection could account for their strange adaptations to the aquatic, fish-laden environment there.
But so what?
What relevance did evolution have to life back on Land?
He’d seen in the fossils of the Bookmark layer that all forms of life had emerged simultaneously: reptiles and fish and amphibians and wingfingers. All of them appeared at once.
Evolution had nothing to do with, oh, say, with a fish spontaneously developing a novelty that allowed it to survive for a short time out of water, and that trait being concentrated over the generations, to, for the sake of a wild example, give rise to amphibians.
Oh, it made sense that it could have happened that way, but that’s not the way it did. Fish and amphibians appeared simultaneously in the fossil record. Evolution had nothing to do with their arrival.
Arrival. Oddly appropriate, that word.
Toroca slapped the deck in frustration. He’d figure it out eventually. He knew he would.
And he knew something else, too: that this, not some silly feat of hunting, was what he owed to his father.
Once again it was Biltog who was doing the watch in the lookout’s bucket.
And once again, he let out a shout of “Land ho!”
But this time it was land indeed, not a frozen waste of ice and snow. In fact, it was Land—the word written as a left-facing glyph, instead of a right-facing one, referring specifically to the vast equatorial mass upon which the Fifty Packs roamed.
The Dasheter’s sails snapped in the steady east-west wind. Toroca reflected briefly that he’d gotten used to that sound, and to the groaning of the ship’s timber, and the scraping of claws on wooden decks, and the slapping of waves against the hull. He was so used to them, in fact, that he barely heard them anymore, but thought that their absence might be almost deafening for his first few days back on solid ground.
Although they had departed from Fra’toolar, they were returning to Capital province, at least for a few days, so that they could take on supplies, and so that Toroca could have meetings with the leader of The Family—a left-facing glyph again—and with members of his own family.
The Dasheter continued in toward the shore, the rocky cliffs of Capital province, similar to although not as spectacular as those along the coast of Fra’toolar, towering up ahead of them, and, in the background, the ragged cones of the Ch’mar volcanoes.
The docks were approaching with visible speed.
The Dasheter was singing out its identification calclass="underline" five loud bells and two deafening drumbeats, then the same sounds again, but softer. Then loudly again, then another soft iteration, over and over as the mighty vessel slipped in next to a vacant pier.
Home, thought Toroca.
Home at last.
*31*
In this universe, intelligent life perhaps needed more of a hand than I’d been providing so far. At least, that’s what the Jijaki aboard the arks told me. They had learned to peer intently into the structures of things and could see the intertwining double spiral of the acid molecule that controlled life.
Of the dinosaurs that had existed on the Crucible, there had been several kinds with potential. The Jijaki had particularly liked one smallish type that was bipedal, with a horizontally held torso balanced by a stiff whip of a tail. It had giant yellow eyes with overlapping fields of vision and three-fingered hands each with an opposable digit. I agreed these beings had possibilities and had ordered them shifted to another, less-promising target world. I was dubious of their chances, though, because their numbers were already in sharp decline on the Crucible, hinting that they weren’t as ideally suited for the road to sentience as they appeared at first glance.
No, the dinosaurs I had favored most, partly because they’d already had a long and successful history as a group, were tyrannosaurs. large, slope-backed carnivores with great heads and giant teeth. Only one problem, for almost the entire lifetime of this group, their forelimbs had been diminishing until now they were withered and all but useless, with just two clawed fingers on the end of each hand.
The Jijaki read the genetic code of these creatures and found the instructions that had originally produced a third and fourth finger, instructions that now were turned off in the early stages of embryonic development. On some of the individuals being transplanted, the Jijaki edited out the termination sequence.
Jijaki had six little tentacles on the inner surface of each of their cup-shaped manipulators. They believed, therefore, that six was the optimal number of digits. It took much searching, but they finally found buried in the tyrannosaurs’ genetic code the long-dormant instruction for the lost fifth finger that their quadrupedal ancestors had possessed. The Jijaki reactivated that as well. They wanted to go further, adding code for a sixth finger, but I forbade that.