A study in building spaceships.
"Mostly, the spaceship builders did not come out of their trailers or houses, though our local guides claimed they didn't mind the occasional tour. They were so serious they could not see that others might laugh. Some of their grounds looked measured and neat; some were spilling over or scraped to dust. Most were single, a few married, some widowed or divorced. The married ones interested us most—what sorts of agreements had they come to? were the ships built for two?"