Finally, nobody claimed to have proved conclusively that the world on the maps wasn't Earth. Admittedly it didn't look like Earth, and attempts to derive the modern distribution of terrestrial continents from the land areas on the maps had met with no success at all. But the planet's gravity hadn't been all that much different. Maybe the surface of Earth had undergone far greater changes over the last fifty thousand years than had been previously thought? Furthermore, Danchekker's arguments still carried a lot of weight, and any theory that discounted them would have an awful lot of explaining to do. But by that time, most of the scientists working on the project had reached a stage where nothing would have surprised them any more, anyway.

"Got your message. Came straight over." Hunt announced as Lyn Garland ushered him into Caldwell's office. Caldwell nodded toward one of the chairs opposite his desk, and Hunt sat down. Caldwell glanced at Lyn, who was still standing by the door.

"It's okay," he said. She left, closing the door behind her.

Caldwell fixed Hunt with an expressionless stare for a few seconds, at the same time drumming his fingers on the desk. "You've seen a lot of the setup here during the past few months. What do you think of it?"

Hunt shrugged. The answer was obvious.

"I like it. Exciting things happen around here."

"You like exciting things happening, huh?" The executive director nodded, half to himself. He remained thoughtful for what seemed a long time. "Well, you've only seen part of what goes on. Most people have no idea how big UNSA is these days. All the things you see around here—the labs, the installations, the launch areas—that's just the backup. Our main business is up front." He gestured toward the photographs adorning one of the walls. "We have people right now exploring the Martian deserts, flying probes down through the clouds on Venus, and walking on the moons of Jupiter. In the deep-space units in California, they're designing ships that will make Vegas and even the Jupiter Mission ships look like paddleboats. Photon-drive robot probes that will make the first jump to the stars—some seven miles long! Think of it—seven miles long!"

Hunt did his best to react in the appropriate manner. The problem was, he wasn't sure what manner was appropriate. Caldwell never said or did anything without a reason. The reason for this turn of conversation was far from obvious.

"And that's only the beginning," Caldwell went on. "After that, men will follow the robots. Then—who knows? This is the biggest thing the human race has ever embarked on: USA, US Europe, Canada, the Soviets, the Australians—they're all in on it together. Where does a thing like that go once it starts moving, huh? Where does it stop?"