Randall Garrett, Dead Giveaway
“ Duckworth nodded silently.Rawlings said: "That's it. Someone or something is adding new material to the City. It's like some sort of cosmic bird-feeding station that has to be refilled every so often."Turnbull looked down at his big hands. "It never was a trade route focus," he said. "It isn't even a city, in our sense of the term, no more than a birdhouse is a nest." He looked up. "That city was built for only one purpose—to give human beings certain data. And it's evidently data that we need in a hurry, for our own good." ”
