"Nothing," said Jones succinctly. "It changes the properties of space, but that's all. Can you think of any use for a faster-than-light radiation-pipe? I can't." Cochrane cocked an eye at Jamison, who could extrapolate at the drop of an equation. But Jamison shook his head. "Communication between planets," he said morosely, "when we get to them. Chats between sweethearts on Earth and Pluto. Broadcasts to the stars when we find that another one's set up a similar plate and is ready to chat with us. There's nothing else." Cochrane waved his hand. It is good policy to put a specialist in his place, occasionally. "Demonstration?" he asked Jones. "There are plates across the crater out yonder," said Jones without emotion. "Twenty miles clear reach. I can send a message across and get it relayed twice and back through two angles in about five per cent of the time radiation ought to take." Cochrane said with benign cynicism: "Jamison, you work by guessing where you can go. Jones works by guessing where he is. But this is a public relations job. I don't know where we are or where we can go, but I know where we want to take this thing." Jones looked at him. Not hostilely, but with the detached interest of a man accustomed to nearly exact science, when he watches somebody work in one of the least precise of them all. Holden said: "You mean you've worked out some sort of production." "No production," said Cochrane blandly. "It isn't necessary. A straight public-relations set-up. We concoct a story and then let it leak out. We make it so good that even the people who don't believe it can't help spreading it." He nodded at Jamison. "Right now, Jamison, we want a theory that the sending of radiation at twenty times the speed of light means that there is a way to send matter faster than light--as soon as we work it out. It means that the inertia-mass which increases with speed--Einstein's stuff--is not a property of matter, but of space, just as the air-resistance that increases when an airplane goes faster is a property of air and not of the plane. Maybe we need to work out a theory that all inertia is a property of space. We'll see if we need that. But anyhow, just as a plane can go faster in thin air, so matter--any matter--will move faster in this field as soon as we get the trick of it. You see?" Holden shook his head. "What's that got in it to make Dabney famous?" he asked. "Jamison will extrapolate from there," Cochrane assured him. "Go ahead, Jamison. You're on." Jamison said promptly, with the hypnotic smoothness of the practiced professional: