Only Rigg knew that the expendables were right to fear the coming of the humans. In the eleven thousand years of human life on Garden, there had been no change in the deep nature of human beings, not in Ramfold, anyway—it was eleven millennia of war, of empires that rose and fell, nations that burgeoned and shrank, languages that developed and disappeared. Vadeshfold was only different in that the facemasks were involved, and history ended in the death of all humans. Death and mutual destruction had come close in Ramfold’s history, too, a couple of times. It was in human nature, and if a hundred and twelve centuries on Garden hadn’t been enough to breed hatred and war out of the human character, Rigg could hardly hope that in the eleven years that had passed on Earth there would be any improvement. They would find that there was something strange here and they would be afraid. Fear would create enmity. It would be mutual. But the people from Earth would have technology that the expendables had not allowed any humans on Garden to match.

And what do we have to counter them? We can hold hands and flee back in time. That will make them tremble!

Rigg could only hope that there was something in some other wallfold that would allow the people of Garden to protect themselves. Yet if there was, why would the people of that wallfold believe Rigg about the danger that was coming? For that matter, why should Rigg believe in it himself? It’s not as if the expendables had been unfailingly honest with him. Could he say that he knew, for himself, that there was some danger coming? No. And yet he must persuade them to help him, to work together with the other wallfolds to find some way to protect the world, to meet the people of Earth as equals, with strength enough not to invite conquest and destruction.

And what if, in one of the wallfolds, there was some variant of humanity that was far more dangerous than anything that might come from Earth? What would Rigg do then? Leave their Wall in place, of course, if he could. But it was just as likely that any such powerful race would overwhelm him before he could give any command to the ships. They would take the jewels from him and rule the world and then it would be up to the people of Earth to protect themselves from the monsters of Garden.

Or none of these things. What if many wallfolds were empty? What if Ramfold was the most advanced of the wallfolds, and there was nothing but this feeble gift of time manipulation?

That would be easy, then. Rigg and Umbo and Param had only to keep silent about their gifts, and let the humans from Earth rescue the people of Garden as they surely expected. There were too many here to take home to Earth, of course, but they could provide the ancient technologies and bring us back to the level that human civilizations had reached on Earth, when they achieved the power to reach out beyond their own star system. Then their coming would be a gift.

Or a curse. They might conquer us, rule over us. But was that anything new? Would it be worse than when the Sessamids came with their mountain warriors and conquered the people of Aressa and all the lands drained by the Stashik River? One harsh ruling class would replace another. Wasn’t that the course of human history? What difference would it make, that one group of humans was in the ascendancy for a while, until they fell to another?

In that case, we’re on a fool’s errand, thought Rigg. Why go from wallfold to wallfold?

Because we can, he answered himself. Because for the first time in eleven thousand, one hundred ninety-one years, humans can go through the Walls, and find out what has become of our once-identical cousins on the other side, and what we humans can do, we must try, or why are we alive?

Rigg saw that Param wasn’t with them. He went back a short way and found her.

“I can’t go on,” said Param.

“Time to rest then,” said Rigg. “This isn’t good ground for a camp, though. Can you go a little farther to see if the ground levels out above this rise?”

“No,” said Param. “I don’t mean it’s time to rest. I mean I can’t go on.”

Rigg looked at her. It was true that she looked tired and bedraggled and she could use a bath and her clothes could use a washing and her hair wanted combing, but what of that? They’d been trekking for nearly three weeks.

“You mean you want to go back?”

“No,” said Param. “I don’t want to go at all.”

Rigg was nonplussed. “You want to stay here on this slope until you die?”

“It won’t be long.”

“Actually, you ate and drank only a few hours ago. So if you stay here it will take several days for you to dehydrate enough to die. And then you’ll fall and roll down the slope, so you won’t actually stay here until you die.”

“She’s got a point,” said Umbo. He and Loaf had followed at once when Rigg went back for Param. “Where are we going? How far is it? Do you have any idea?”

“It’s farther than this,” said Rigg. “Assuming the escarpment is roughly round or oval, it has to turn completely east before we’ve rounded it to the south and can strike out for the coast.”

“If anything we were told is true,” said Param.

“We weren’t told anything,” said Umbo. “The voice only talked to Rigg.”

“We heard it,” said Param. “Oh, please don’t fight over this. I just can’t go on, that’s all I’m saying. I’m exhausted. You said I’d get stronger, but I’m not.”

“You are,” said Rigg. “Much stronger. You walk farther each day, you move faster, you rest less often. Of course you’re stronger.”

“Walk farther, farther, farther, and up and down forever,” said Param. “The whole land looks the same.”

“But it’s not,” said Rigg. “It changes. With the elevation. We have different trees in this forest now, higher elevation yet from farther south. Different animals, a different season.”

“If there’s a difference, I can’t see it,” said Param.

Were people of the city all as blind as this? “We’re making progress,” said Rigg. “This is what a journey requires.”

“We had a carriage when we left the city,” said Param. “We had horses after. And we were running from danger. There’s no danger here. Where are we going? Why?”

“We’ve talked about this before. And you had the choice, when we were still near the Wall. You could have—”

“But I didn’t,” said Param, “and now I’m here. Why couldn’t we all have ridden that self-moving wagon you rode on, and gone into the starship, and flown away?”

“Because it’s buried under millions of tons of rock,” said Rigg. “To start with.”

“I know you’re doing what they said to do,” said Umbo. “And you’ve provided food for us, and we’ve been safe. But look at us. Look at Loaf. This is what came from doing what these machines told us to do. Why are we listening to them?”

“Good question,” said Olivenko, who had finally come back to join them.

“What else can we do?” asked Rigg. “If we’re in danger from starships from the home planet of the human race, then—”

“If,” said Param. “Ships between the stars? Really?”

“We saw the ship that planted us here when it arrived,” said Rigg. “As we passed through the Wall.”

“We saw something,” said Olivenko. “We only have the machines’ word that it meant what they said it meant.”

“Do you have some better source of information?” asked Rigg. “If what they say is true, then we’re the best hope of the human race—human races—of Garden.”

“Have we met any living humans from another wallfold?” asked Param.

“Why did your father train you, if you were just supposed to leave the wallfold where that training had some application?” asked Umbo.

“Do what you want,” said Rigg. “Go where you want. I’m going on.” Rigg rose to his feet and began to climb up the slope.

“So you’ll just leave us?” asked Param.

“You’re free to come,” said Rigg. “Or stay and rest.”