"I cannot answer for certain, nor could anyone else on Odern," Dargnil Dargnil Lin said. "There are speculations, but who can truly hope to see into the minds of the Great Ones? Only when we can match their deeds will we be worthy to comprehend their thoughts."

Jennifer's mouth twisted in discontent. The Foitani were too busy venerating their past to try seriously to understand it. "May I speak without causing offense through ignorance of your customs?" she asked, one of the standard questions every trader learned.

"Speak," Dargnil Dargnil Lin said.

"If the Great Ones were as magnificent in every way as you make them out to be, why did they ever go and fight the Suicide Wars in the first place?"

"For reasons of their own, reasons which surely reflected their greatness," Dargnil Dargnil Lin answered. Jennifer filled her lungs to shout at him; that was less than no answer, for it shunted aside thought rather than inspiring it. But the Foitan was not through. "Some among us have speculated that the Great Unknown contains the full and proper response to your question, and that our failure to grasp merely reflects our degeneracy in comparison to our ancestors."

"That's?" Jennifer stopped. How did she know it was nonsense? She was no Foitan?thank God, she added to herself. She tried again. "That's interesting. What evidence do your scholars apply in support of it?" The idea of the Foitani of Odern as decadent descendants of the true race had a nasty appeal to her, not least because it made their behavior in snatching her the product of debased minds.

Dargnil Dargnil Lin said, "I will show you a tape and let you draw your own conclusions."

"Show me several tapes, ones with differing points of view. How can I decide what is true on the basis of a single report?"

"You are a scholar," Dargnil Dargnil Lin said, as if reminding himself. "Very well, let it be as you wish." For the next several hours, Jennifer viewed records of the Foitani discovery of the Great Unknown, and of speculations about it. When she was through for the day, she mentally apologized to the big, blue aliens. She'd thought them too staid to produce much in the way of crackpottery. Now she knew better. Given the proper stimulus, they could be as bizarre as any human ever born.

The Great Unknown was proper enough. She studied orbital views of it, then pictures taken at long range from the ground, and finally close-ups. "Those were obtained by remote-controlled cameras," Dargnil Dargnil Lin said of the last batch. "We have a great store of data, as you see. They do not lead us toward understanding, however."

The old Foitani seemed to have gone in for monumental architecture in a big way. Massive colonnades led toward an enormous column that leaped most of a kilometer into Gilver's sky. No weeds, no undergrowth marred the Great Unknown or its precinct, even after twenty-eight thousand years. Nor had Gilver's tectonic forces damaged either tower or colonnades. They might have been raised yesterday rather than in the late Pleistocene.

"Why didn't this thing get bombed along with the rest of the planet?" Jennifer asked.

"Something else we do not know," Dargnil Dargnil Lin said. "For your knowledge base, though, you should also observe some of the first of our people to come close enough to the artifact to feel its effect." He spoke into the microphone again.

After a few seconds of viewing, Jennifer had to turn away. Greenberg had been right; the Foitani who got too close to the Great Unknown weren't pretty. They hadn't just been damaged?they'd been destroyed. They drooled and shook and sucked on their toes and relieved themselves wherever they happened to be. Their muzzled faces gave not the slightest indication of surviving intelligence, nor could Dargnil Dargnil Lin's translator make sense of the shrieks and growls that sprang from their throats.

"This happened to all your people who got too close?" Jennifer said, gulping.

"All. The precise radius at which the Great Unknown began to grip them varied with the individual, but within it no one was safe."

"Hmm." Jennifer thought for a while. "And we know this didn't happen with Bernard. Does it happen to Foitani from worlds other than Odern who come to Gilver?"

"We do not know," Dargnil Dargnil Lin said. "We do not want to find out. To an alien such as yourself, all who still inhabit the Great Ones' sphere may rightly be known as Foitani. Well and good. But those who spring from other worlds are untrustworthy at best and outright abomination at the worst. Only we of Odern are the true descendants of the original race."

"Oh, my aching head," Jennifer said softly.

"Your head still distresses you? Perhaps it is an aftereffect of the ray Thegun Thegun Nug used to stun you. I hope you have an analgesic available."

"Never mind," Jennifer said, not surprised the translator had been too literal. All the surviving Foitani had been separated from one another for more than twenty thousand years. No wonder they'd have trouble getting along. After so much time, they wouldn't even all be of the same species any more. She asked, "When you deal with these other Foitani, what language do you use?"

"That of the Great Ones, so far as we understand it. It is the only speech we have in common, after all. Some worlds, among which Odern takes the lead, also use this tongue in everyday life in place of our former degenerate jargons. Others barbarously insist on maintaining the primitive languages they employed before coming into contact with more civilized Foitani."

"All right; thanks. I think I've seen enough for today, if that's all right with you." What with the spectacle of completely deranged Foitani and the realization that the Foitani of Odern were just one small part of a much bigger puzzle, Jennifer was sure she'd seen enough.

Bernard Greenberg clapped a rueful hand to his forehead when she told him what she'd learned. He said, "I should have thought of that. It's too easy to forget how long they spent isolated on their own planets."

"With luck, it won't matter," Jennifer answered. "After all, the Foitani from Odern are the only ones who know about Gilver, so they'll be the only ones we have to worry about."

"I suppose so," Greenberg said. "But if they learned of the place from records they dug up, there's always the chance some other bunch will, too."

Jennifer had tried not to think about that. "Bite your tongue."

The more she researched the Great Unknown, the more she concluded that was a good name for it. Fusion bombs had all but sterilized Gilver. They'd fallen all around the mysterious artifact, but not a single one had landed inside what she'd taken to calling the radius of insanity. The planet's ecosystem was still struggling to repair itself; parts of that continent had become almost lush with greenery. Within the radius of insanity, nothing grew. Mere life, apparently, was not allowed to disturb the Great Unknown.

"I can imagine achieving that effect for a limited time, with periodic maintenance," Dargnil Dargnil Lin said when Jennifer asked him about it. "But to continue since the Suicide Wars… no, human Jennifer, it is but another of the wonders the Great Ones left behind for us to marvel at."

Jennifer was sick of marveling at the Great Ones. She wanted answers, and the Foitani records on Odern held precious few of them. "I never would have believed it," she said when her last allotted research day was done, "but I'll be glad to go to Gilver, just to try and figure out what's really going on."

"More power to you, if you can do that on Gilver," Greenberg answered. "If you think Odern is boring, you haven't seen anything yet."

"I haven't seen anything of Odern, except the spaceport and the library. Neither one of them is likely to drive Earth or Redford's Star off the tourist itineraries."