I shook my head again. They all stared at me in confusion. Doc shook his head, too, slowly, baffled.

I took a deep breath, then whispered, “I’m not a Healer. I don’t know how they—the medications—work. Only that they do work— they heal, rather than merely treating symptoms. No trial and error. Of course the human medicines were discarded.”

All four of them stared with blank expressions. First they were surprised when I didn’t answer, and now they were surprised when I did. Humans were impossible to please.

“Your kind didn’t change too much of what we left behind,” Jeb said thoughtfully after a moment. “Just the medical stuff, and the spaceships instead of planes. Other than that, life seems to go on just the same as ever… on the surface.”

“We come to experience, not to change,” I whispered. “Health takes priority over that philosophy, though.”

I shut my mouth with an audible snap. I had to be more careful. The humans hardly wanted a lecture on soul philosophy. Who knew what would anger them? Or what would snap their fragile patience?

Jeb nodded, still thoughtful, and then ushered us onward. He wasn’t as enthusiastic as he continued my tour through the few connecting caves here in the medical wing, not as involved in the presentation. When we turned around and headed back into the black corridor, he lapsed into silence. It was a long, quiet walk. I thought through what I’d said, looking for something that might have offended. Jeb was too strange for me to guess if that was the case. The other humans, hostile and suspicious as they were, at least made sense. How could I hope to make sense of Jeb?

The tour ended abruptly when we reentered the huge garden cavern where the carrot sprouts made a bright green carpet across the dark floor.

“Show’s over,” Jeb said gruffly, looking at Ian and the doctor. “Go do something useful.”

Ian rolled his eyes at the doctor, but they both turned good-naturedly enough and made their way toward the biggest exit—the one that led to the kitchen, I remembered. Jamie hesitated, looking after them but not moving.

“You come with me,” Jeb told him, slightly less gruff this time. “I’ve got a job for you.”

“Okay,” Jamie said. I could see that he was pleased to have been chosen.

Jamie walked beside me again as we headed back toward the sleeping-quarters section of the caves. I was surprised, as we chose the third passageway from the left, that Jamie seemed to know exactly where we were going. Jeb was slightly behind us, but Jamie stopped at once when we reached the green screen that covered the seventh apartment. He moved the screen aside for me but stayed in the hall.

“You okay to sit tight for a while?” Jeb asked me.