"There's a digger wasp on Earth whose female singles out a particular species of tarantula to feed her larvae--and the spider stands patiently by, held by some compulsion whose nature we can't even guess, while the wasp digs a grave, paralyzes the spider and shoves it into the hole with an egg attached. The spider could kill the wasp, and will kill one of any other species, but it submits to that particular kind without a flicker of protest. And if we can't understand the mechanics of such a relationship between reflexive species, then what chance have we of understanding the logic of an _intelligent_ race of aliens? The results of its activities can be assessed, but not the motivations behind those activities." "All right," Farrell conceded. "You and Gib are right, as usual, and I'm wrong. We'll check that fourth dome." "You'll stay here with Xav," Stryker said firmly, "while Gib and I check. You'd only punish yourself, using that foot." * * * * * After another eight-hour period of waiting, Farrell was nearing the end of his patience. He tried to rationalize his uneasiness and came finally to the conclusion that his failing hinged on a matter of conditioning. He was too accustomed to the stable unity of their team to feel comfortable without Gibson and Stryker. Isolated from their perpetual bickering and the pleasant unspoken warmth of their regard, he was lonesome and tense. It would have been different, he knew, if either of the others had been left behind. Stryker had his beloved Reclamations texts and his microfilm albums of problems solved on other worlds; Gibson had his complicated galactic charts and his interminable chess bouts with Xavier.... Farrell gave it up and limped outside, to stand scowling unhappily at the dreary expanse of swampland. Far down under the reasoning levels of his consciousness a primal uneasiness nagged at him, whispering in wordless warning that there was more to his mounting restlessness than simple impatience. Something inside him was changing, burgeoning in strange and disturbing growth. A pale suggestion of movement, wavering and uncertain in the eddying fog, caught his eye. A moment of puzzled watching told him that it was the bedraggled young woman they had seen earlier by the lake, and that she was approaching the ship timorously and under cover. "But why?" he wondered aloud, recalling her bovine lack of curiosity. "What the devil can she want here?" A shadow fell across the valley. Farrell, startled, looked up sharply to see the last of the Falakian sun's magenta glare vanishing below the crater's southern rim. A dusky forerunner of darkness settled like a tangible cloud, softening the drab outlines of bramble thickets and slime pools. The change that followed was not seen but felt, a swelling rush of glad arousal like the joy of a child opening its eyes from sleep.