"Nothing we've seen yet could have built that city," Gibson said stubbornly. "But it's here somewhere, and I'm going to find it. Will either of you be using the scouter today?"
Stryker threw up his hands. "I've a mountain of data to collate, and Arthur is off duty after standing watch last night. Help yourself, but you won't find anything."
The scouter was a speeding dot on the horizon when Farrell crawled into his sleeping cubicle a short time later, leaving Stryker to mutter over his litter of notes. Sleep did not come to him at once; a vague sense of something overlooked prodded irritatingly at the back of his consciousness, but it was not until drowsiness had finally overtaken him that the discrepancy assumed definite form.
He recalled then that on the first day of the Marco's planetfall one of the pink fishers had fallen from a casting ledge into the water, and had all but drowned before his fellows pulled him out with extended spear-shafts. Which meant that the fishers could not swim, else some would surely have gone in after him.
And the Marco's crew had explored Arz exhaustively without finding any slightest trace of boats or of boat landings. The train of association completed itself with automatic logic, almost rousing Farrell out of his doze.
"I'll be damned," he muttered. "No boats, and they don't swim. Then how the devil do they get out to that islet?"
He fell asleep with the paradox unresolved.
Stryker was still humped over his records when Farrell came out of his cubicle and broke a packaged meal from the food locker. The visicom over the control board hummed softly, its screen blank on open channel.