"Maybe the theory's wrong," said Armstrong, fiddling with a pencil. He was always impatient with abstractions.
"Could be," said Sushi, shrugging. "But molecular structure's just one problem. Invisibility flies in the face of half a dozen principles. With all those impossibilities piled on top of one another, maybe the original premise is wrong somehow."
"Oho, Sushi, I see how you are intending," said Qual. He opened and closed his mouth, with a very impressive display of fangs. "Nonetheless, I can tell you, we have left nothing to chance. The coordinates of the Hidden Ones' transmissions were most carefully plotted, and the arrival of our forces was kept masked until the ultimate moment. The site was investigated with thoroughness, and nothing was learned. I can speak with certainty, for I was among the investigators."
"Well, I'd trust you to spot anything that was there to be spotted," said Rembrandt. "I can see what Sushi's getting at, too, but I think we've got to assume the Zenobians know what they're talking about."
"I'll take Qual's word for the observations," said Sushi. "What I question is the Zenobians' conclusion. The Alliance uses a lot of camouflage and stealth technology. What's to say that these invaders don't have even more advanced stealth technology than our forces?"
"Well, that's precisely what we're assuming," said Rembrandt. "But the Zenobians detected the Hidden Ones' signals very easily once they found the frequency. That argues that their technology isn't particularly advanced. Why, any properly stealthed signal is practically indistinguishable from normal background radiation."
"So it is," said Qual. "Our inability to locate these Hidden Ones is strong evidence that in one respect, at least, they are more advanced than either of us. It is not a good idea to underestimate them."
"That's what I'm worried about, yes," said Armstrong.
"It's never a good idea to underestimate somebody who might be invading you."
"Captain Clown can tell you that we are estimating the Hidden Ones as a big difficulty," said Qual. "It is clear from their transmissions that they are already on our planet, scouting for suitable sites to establish settlements. But they make no attempt to contact us, do not reply to our signals on their own wavelengths. We must by default conclude that their intentions are hostile."
"Yeah, I'm afraid that's the obvious conclusion," said Rembrandt. "The question that raises is, what are we going to do about it?" She looked around the room, but nobody seemed to have an answer.
"Do you really intend to give that pair of scamps carte blanche to investigate this problem, sir?" Beeker's disapproval was plain on his face.
"Sure, why not?" Phule looked puzzled. "I'm sure the Zenobians have their experts working on all the conventional ways to solve the problem. We might as well put our money on the unconventional approach. Sushi's as good on the computer as anybody in the company, and Do-Wop's got the equivalent of a master's degree in low cunning. Maybe they'll crack it-and if they don't, this'll keep them out of trouble for a while."
"You assume that the aliens' apparent invisibility is the result of some kind of trickery," said the butler. "What if it is inherent in their very nature?"
"Natural camouflage of some sort?" Phule rubbed his chin. "I suppose it's possible. There are plenty of species that can blend into the landscape almost undetectably. Although here, we're talking about electronic surveillance, which is a lot harder to fool than the bare eyeball. Besides, you'd think that a species from another planet would be evolved to match the landscape of its own home world, not one they've invaded."
Beeker steepled his fingertips. "That argument overlooks how similar the environments of life-bearing planets are, sir. The minerals that make up the soil are very much the same here as on the other worlds we've been on, although they differ in their proportions. A desert creature from Earth-or from a dozen other worlds-would blend in very well with the dry country we flew over on the way here, I think. I suspect that their swamp creatures will turn out to mimic the color of the local mud."
"Parallel evolution," Said Phule, nodding. "Sure, the scientists have found plenty of examples of that. But at the same time, there are always unique qualities to a planet's style of life. Tusk-anini's face may look like a warthog, but he's got opposable thumbs and upright posture-"
"Which I must point out, sir, are parallel to features found in other Earth creatures," said Beeker, unperturbed.
Phule raised his hand, forefinger in the air. "The Synthians-"
"Yes, sir," said Beeker, cutting him off. "I am certain we could trade examples and counterexamples all day. That would not prove or disprove my point, which is simply that life adapted to one planet is not automatically out of place on another. Look how many worlds we humans have successfully colonized. My original point, sir, is that Sushi and Do-Wop ought to be reminded to look for solutions that do not depend on advanced stealth technology.
"I'll trust Do-Wop to check out the low-tech end," said Phule. "The lower it is, the more likely he is to think of it-"
"Undeniably," said Beeker. His face remained placid.
After a moment, Phule frowned. "All right, Beek, I know that act," he said, pointing a finger at his butler. "You think I'm doing something stupid, but you don't think it's your place to call me out on it. So you'll let me fall all over myself doing it, and then pick me up with a smug I-told-you-so expression. Or you'll pull strings behind my back to make me do what you think I ought to be doing, without knowing it was your idea. Am I right or wrong?"
"I would not put it in quite those terms, sir."
"I don't care what terms you want to put it in," said Phule. "We're in a different situation; this is a military operation, and more than just saving face could be at issue. If it's something I need to know, I need to know it before we get into real trouble. So cough it up, Beek."
Beeker drew himself up straight. "Sir, as I have told you more than once, I have no special expertise-nor special interest, either-in military affairs."
"I don't think that's relevant," said Phule sharply. "Come on, now. There's something you're holding back, and I want to know it."
Beeker put his hands behind his back and said, "Very well, sir. Is there someplace we can speak in complete privacy?"
"What's wrong with here?" said Phule, looking around at the apartment the Zenobians had given him for his use during his stay in their capital. Then a light came into his face, and he said, "Aha, I see what you're getting at. Sure, I think we can find someplace. Let's take a walk."
Phule and Beeker walked out the door-ducking their heads, since it had been built for a race just over half normal human height-and headed down the hallway toward the street exit. A Zenobian in uniform-a Mudrover, to judge by its color-was on guard in the hallway. The alien rose to its feet and made a hissing sound; Phule had donned a translator for the purpose, and almost as the Zenobian spoke, he heard a mechanical voice in his ear: "Greetings, Captain! May I be of service?"
"Thank you, no," said Phule. "My butler and I have decided to get some exercise before our meal. We will walk around on your streets for a while and return here shortly."
"It may not be safe," protested the Zenobian. "I must accompany you, to see that you encounter nothing perilous."
"You are welcome to join us," said Phule solemnly. He looked at Beeker, raising an eyebrow.
Beeker shrugged. "I suppose this simply confirms what I had suspected. However, there may be a way around the problem."
"To begin with, I'll turn off my translator," said Phule, reaching down to his belt and touching the switch. "Then they'll have to record and replay our conversation through a translator to get any idea of what we're talking about."