Elsewhere, the profoundest minds of the planet gingerly examined the appalling fact that signals came to Earth from a place where men could not be. A message came from something which was not human. It was a suggestion to make cold chills run up and down any educated spine. But Burke drove tensely, and the road's surface sped toward the car's wheels and vanished under them. A warm breeze hummed and thuttered around the windshield. Sandy sat very still. "The way I'm acting doesn't make sense, does it?" Burke asked. "Do you feel like you're riding with a lunatic?" "No," she said. "But I never thought that if you ever did get around to asking me to marry you, somebody from outer space would forbid the banns! Can't you tell me what all this is about?" "I doubt it very much," he told her. "Can you tell me what the signals are about?" She shook her head. He drove through the night. Presently he said, "Aside from my private angle on the matter, there are some queer things about this business. Why should somebody out in space send us a broadcast? It's not from a planet, they say. If there's a spaceship on the way here, why warn us? If they want to be friends, they can't be sure we'll permit it. If they intend to be enemies, why throw away the advantage of surprise? In either case, it would be foolish to send cryptic messages on ahead. And any message would have to be cryptic." The car went whirring along the roadway. Soon twinkling lights appeared among the trees. The small and larger buildings of Burke Development, Inc., came gradually into view. They were dark objects in a large empty space on the very edge of Burke's home town. "And why," he went on, "why send a complex message if they only wanted to say that they were space travelers on the way to Earth?" The exit from the highway to Burke Development appeared. Burke swung off the surfaced road and into the four-acre space his small and unusual business did not begin to fill up. "If it were an offer of communication, it should be short and simple. Maybe an arithmetic sequence of dots, to say that they were intelligent beings and would like the sequence carried on if we had brains, too. Then we'd know somebody friendly was coming and wanted to exchange ideas before, if necessary, swapping bombs." The car's headlights swept over the building in which the experimental work of Burke Development was done and on to the small house in which Sandy kept the books and records of the firm. Burke put on the brakes before the office door. "Just to see if my head is working right," he said, "I raise a question about those signals. One doesn't send a long message to emptiness, repeated, in the hope that someone may be around to catch it. One calls, and sends a long message only when the call is answered. The call says who's wanted and who's calling, but nothing more. This isn't that sort of thing."