"Whomever you say." Jennifer paused, wondering whether she should trot out her all-purpose question again. She decided to: "May I speak without causing offense through ignorance of your customs?"

Pawasar Pawasar Ras and Aissur Aissur Rus's translators answered together. "Speak."

"I've met a good many Foitani by now. As far as I can tell, all of you have been males. If I'm mistaken, I beg your pardon, but if I'm not, why haven't I met any of your females?"

"As this question steps along, the claws of its feet press against delicate flesh," Pawasar Pawasar Ras said.

"Shall I attempt an answer, honored kin-group leader?" Aissur Aissur Rus asked.

"Please do," his boss answered.

Aissur Aissur Rus turned to Jennifer. She was ready to hear anything?perhaps even that storks brought baby Foitani from the lettuce patch like so much airfreight. Aissur Aissur Rus said, "I know that in your species, human Jennifer, as in most, gender is fixed for the life of the individual. This is not so among us. During approximately our first thirty years of life, we are female; for the balance, we are male. Thus you will not see females in places of importance among us, as they, by their nature, cannot acquire sufficient experience to justify such placement."

"Oh," Jennifer said. That made a certain amount of sense. She decided to tweak the Foitani. "You are aware that I'm female."

"Indeed," Pawasar Pawasar Ras said, apparently relieved that someone else had done the talking about actual details. "You are, however, also of another species. The denigration implied by that far outweighs any relating to your gender."

"Oh," Jennifer said again, in a different tone of voice. The Foitani didn't need to look down their muzzles at her gender to keep her in her place.

Even Aissur Aissur Rus seemed relieved not to have to talk about gender any more. He quickly changed the subject. "Let us proceed to Enfram Enfram Marf, human Jennifer. He is our explosives expert here, as I said."

"All right." Jennifer smiled a little at finding the Foitani, for all their differences from mankind, so Victorian about the way their bodies worked. Had she not studied Middle English, she wouldn't have had a word to describe their attitude; the term had not come forward into Spanglish. Something occurred to her. "Did the Great Ones operate the same way you do, Aissur Aissur Rus?"

"Certainly." Aissur Aissur Rus drew himself up even taller than he was already, a paradigm of offended dignity. "They were Foitani and we are Foitani. How could disparity exist between us?"

"I didn't mean to make you angry," Jennifer said, on the whole sincerely?she liked Aissur Aissur Rus best of the Foitani she'd met. "I was just asking."

"Very well, I shall assume the slight was unintentional. Now let us proceed to Enfram Enfram Marf."

The Foitani explosives expert was taller but thinner than Aissur Aissur Rus. He had a scarred muzzle that made him easy to recognize. All the Foitani seemed predatory to Jennifer; Enfram Enfram Marf seemed predatory even for a Foitan. He all but salivated when Aissur Aissur Rus explained why they were there. "I do not believe it," he said several times. "How did you persuade Pawasar Pawasar Ras to let us use the power we have? I thought he would just let us sit here forever, doing nothing."

"The opinions and suggestions of the human Jennifer aided materially in getting him to modify his previous opinion," Aissur Aissur Rus said. That made Jennifer like him even better. Plenty of humans wouldn't have shared credit with a friend from their own species, let alone with an alien they'd hijacked.

Enfram Enfram Marf turned to stare at her. "This ugly little pink and white and yellow thing?" Jennifer heard through Aissur Aissur Rus's translator. "Pawasar Pawasar Ras listened to this sub-Foitani blob where he would not hear you? Our sphere's a strange place, and no mistake."

The contempt behind the colorless words made Jennifer realize she really had been dealing with what passed for interspecies diplomats among the Foitani. If Enfram Enfram Marf thought like the average Foitan in the street, no wonder the Great Ones hadn't worried about genocide.

She smiled sweetly at the ordnance officer?she knew the smile was wasted on him, but used it for her own satisfaction?and said, "I'm female, too. How do you like that?"

Had Enfram Enfram Marf been human, he would have turned purple. He drew back a leg, as if to kick Jennifer across the room. "Wait," Aissur Aissur Rus said before the leg could shoot forward. "The human is still of use to us."

"Why?" Enfram Enfram Marf retorted. "Now that we have Pawasar Pawasar Ras's permission to open up the Great Unknown, we don't need this thing to gather data for us. We can go back to using machines; they'll be able to bring artifacts out past the radius of doom so we can properly study them."

"If all goes well, yes," Aissur Aissur Rus said. "But all may not go well. Machines are less flexible than intelligent beings, even now. Moreover, we acquired the human Jennifer not so much to gather data as to interpret it. She is expert in a peculiar form of extrapolation by storytelling that humans developed long ago, which may give her unusual insight into the reasons the Great Ones created the Great Unknown as they did."

"How could this creature understand the Great Ones when we, their descendants, do not?" Enfram Enfram Marf demanded. But his leg returned to the floor. He bared his teeth, then went on, "Oh, very well, Aissur Aissur Rus, let it be as you say. I shall begin calculating the proper weight, shape, and composition of the charge, based on what we know of the thickness and material of the tower's outer wall."

"Excellent, Enfram Enfram Marf. That is what we require of you."

"Nice to know that I'm useful," Jennifer remarked as Aissur Aissur Rus led her down the corridor. "Otherwise you would have let him kick me into the middle of next week."

Aissur Aissur Rus paused and looked down at Jennifer. After a moment, he said, "I will assume my translator should not have rendered that idiom so literally."

"Well, no," Jennifer admitted.

"Good. We did not believe humans capable of time travel. We are not able to travel in time ourselves, either, though there are some poorly understood indications that the Great Ones had that ability."

It was Jennifer's turn to stare. She had thought about pulling Aissur Aissur Rus's leg over what was indeed merely an idiom the translator program had missed?there wasn't a program around that didn't have a few of those annoying blank spots in it. Now she wondered if he wasn't telling her a tall tale to get even. The only trouble was, she didn't think Foitani minds?even that of Aissur Aissur Rus, who was the loosest, most freewheeling thinker she'd met among the aliens?worked that way.

She called him on it. "Time travel is as impossible?"

"As a hyperdrive trap?" he interrupted. She opened her mouth, then closed it again as she realized she had no good comeback to make. She thought of herself as quicker-witted than the Foitani, but this time Aissur Aissur Rus unquestionably got the last word.

The tracked sledge delivered the explosive charge against the side of the polished white stone, then rolled off. The charge clung to the stone. The sledge stopped a couple of hundred meters away. Jennifer and Greenberg crouched behind it, on the side facing away from the stone. Greenberg spoke into his communicator. "We're under cover, Enfram Enfram Marf."

The Foitani ordnance office did not waste time replying. An instant later, a sharp, flat craaack rang out. It was much less dramatic than Jennifer had expected. She lifted her head. The stone panel had a neat, almost perfectly round hole in it, about a meter and a half across.

"He knows his stuff," she said, less than delighted about giving Enfram Enfram Marf any credit whatever.