 Why was the Volpla vocabulary limited when the narrator took a few into the valley?
Volpla By WYMAN GUIN Illustrated by Volplas at last. Yet I had always been so sure I could create them that I had been calling them volplas for ten years. I had called them volplas since the day old Nijinsky's elongated arms and his cousin's lateral skin folds had given me the idea of a flying mutant. Again in the laboratory, I entered the metabolic accelerator and withdrew the intravenous needles from my first volplas. It would be several hours before they would begin to move, to learn to feed and play, perhaps to learn to fly. Meanwhile, it was clear that here was no war of dominant mutations. Outside this little town, I found a litter of flat stones that had young black-snakes under each slab.
 They were encountering concepts that were unfamiliar from the lab environment
 They had not been alive long enough to learn enough English to communicate well  They were encountering concepts that were unfamiliar from the lab environment  They are not smart enough to have a fully developed language, no matter how hard they try  They were confusing their own language with English, having trouble keeping the languages separate