"Observe how they make their living," the instructor continued.
The class saw the natives at work tilling the soil. The technique used here was very crude but mildly interesting. They used plows and harrows for loosening the soil, devices that were pulled by large animals.
"Horses, I believe they call the animals. Of course, we don't allow them to have power-drawn equipment."
"It's not at all like the way we obtain our food," Billy Kasker said thoughtfully.
"Oh, no," the instructor answered. "We synthesize our foods. As a matter of fact, they are required to grow their food. That way, they have to spend so much time finding something to eat that they can't cause trouble." He grinned as if something in the idea pleased him.
"Serves them right," Joe Buckner said.
The natives working in the fields seemed not to see the class. When the group came near, they stopped talking and worked harder.
"Scared to talk when we're around," Joe Buckner said. "They're yellow!"
"Now for the factory section," the instructor said.
The factories were small and unimpressive. Working here with very crude tools and with no power equipment, the natives were making farm machinery.