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which she returned as often as her work would permit. Her exact understanding of the way people there thought about things and did things also made them easy for her to manipulate; and on occasion that could be very useful.
In most other places, the means she had employed to turn the Guardian and his troop back from the hollow probably would have started a panic or brought armed ships and radiation guns zooming up for the kill within minutes. But the valley people had considered 車買取 it just another local emergency. The bronze alarm bell in the village had pronounced a state of siege, and cow horns passed the word up to the outlying farms. Within minutes, the farmers were pelting down the roads to the village with their families and guns; and, very soon afterward, everything quieted down again. Guard lines had been set up by then, with the women and children quartered in the central buildings, while the armed men had settled down to watching Grandma’s illusion projections—directional video narrow beams—from the discreet distance marked by the village boundar 中古車 ies.
If nothing else happened, the people would just stay there till morning and then start a cautious inves­tigation. After seeing mysterious blue lights dancing harmlessly over Grimp’s farm for four summers, this section of Wend was pretty well conditioned to fiery apparitions. But even if they got too adventurous, they couldn’t hurt themselves on the projections, which were designed to be nothing but very effective visual displays.
What it all came to was that Grandma had everybody in the neighborhood rounded up and immobilized where she wanted them.

In every other respect, the valley presented an exceptionally peaceful twilight scene to the eye. There was nothing to show that it was the only present point of contact between forces engaged in what was probably a war of intergalactic proportions—a war made wraith-like but doubly deadly by the circumstance that, in over a thousand years, neither side had found out much more about the other than the merciless and devastating finality of its forms of attack. There never had been any actual battles between Mankind and the Halpa, only alternate and very thorough massacres—all of them, from Mankind’s point of view, on the wrong side of the fence.
The Halpa alone had the knowledge that enabled them to reach their human adversary. That was the trouble. But, apparently, they could launch their attacks only by a supreme effort, under conditions that existed for periods of less than a score of years, and about three hundred years apart as Mankind measured time.
It was hard to find any good in them, other than the virtue of persistence. Every three hundred years, they punctually utilized that brief period to execute one more thrust, carefully prepared and placed, and ­carried out with a dreadfully complete abruptness, against some new point of human civilization—and this time the attack was going to come through on Noorhut.

“Something’s starting to move around in that hollow!” the pony announced suddenly. “It’s not one of their globe-detectors.”
“I know,” murmured Grandma. “That’s the first of the Halpa themselves. They’re going to be right on schedule, it seems. But don’t get nervous. They can’t hurt anything until their transmitter comes through and revives them. We’ve got to be particularly careful now not to frighten them off. They seem to be even more sensitive to emotional tensions in their immediate surroundings than the globes.”
The pony made no reply. It knew what was at stake and why eight big ships were circling Noorhut somewhere beyond space-detection tonight. It knew, too, that the ships would act only if it was discovered that Grandma had failed. But—
The pony shook its head uneasily. The people on Treebel had never become civilized to the point of considering the possibility of taking calculated risks on a planetary scale—not to mention the fact that the lives of the pony and of Grandma were included in the present calculation. In the eight years it had been accompanying her on her travels, it had developed a tremendous respect for Erisa Wannattel’s judgment and prowess. But, just the same, frightening the Halpa off, if it still could be done, seemed like a very sound idea right now to the pony.
As a matter of fact, as Grandma well knew, it probably could have been e