"We are getting quite expert, Stella," a quietly smiling young man said in a friendly conversational tone. "Anatomy has become quite a study for us, these past months. Hold still please while I examine the extent of fracture."
2615 closed the door and turned to Pwowp. "You see?" it said. "Is there any doubt now?"
"None," Pwowp said. "That must be the last, however. There will just be time for it to knit."
"The robots are ready?" 2615 asked.
"Yes. In five more days we load them into ships and depart for outer space. It is all planned, down to the smallest fraction of a second." Pwowp pulled absently on his lip in a practiced gesture. "It has really been enlightening, this study of conditioning. Conditioning is such a powerful instrument. Conditioning of humans until they will do anything to avoid pain. Conditioning of robots to unquestioning obedience. Remarkable...."
The robots rode the travelwalks like giant toys on an assembly line belt. They disappeared into the two giant ships and laid themselves down in careful stacks until they were piled from bulkhead to bulkhead, from shell to shell. There wasn't an inch to spare when it was done, because these were warships, not freighters.
There were no more robots outside the ships in this vast spherical darkness of the heart of the asteroid, only half illuminated by occasional directed beams.
Then space-suited figures appeared, riding the travelwalk to one of the ships. Two of them stayed close together, holding to each other. The rest surrounded these two, guarding them. They disappeared into the ship.
Last, a man and a robot appeared at the edge of the travelwalk. The robot was 2615. The man was a robot shell, and within it was Pwowp.