"I'll say it's simple," said Tommy. "Just a little matter of bending space and time into a tiny universe. Wrapping it about a selected bit of matter and making it stay put.”

"You could use it to control the energy," rumbled Kingsley. "I understand that well enough. When the universes begin to rub you could trap the incoming energy in an artificial universe. The energy would destroy that universe, but you'd have another ready for it. What I can't understand is how you form this artificial fourth-dimensional space.”

"It isn't artificial," snapped Gary. "It's real… as real as the universe we live in. But it's made by human beings instead of by some law we have no inkling of.”

He pointed at the sheet of calculations. "Perhaps the secret of all the universe is on that sheet of paper," he declared. "Maybe that's the key to how the universe was formed.”

"Maybe," rumbled Kingsley, "and maybe not. There may be many ways to do it.”

"One," said Gary, "is good enough for me.”

"There's just one thing," said Caroline, "that bothers me. We don't know anything about the fifth-dimensional inter-space. We can imagine that its laws are different from our own. Vastly different. But how do they differ?

What kind of energy would be formed out there? What form would it take?”

She looked from one to the other of them. "That would make a lot of difference," she declared.

"It would," agreed Kingsley. "It would make a lot of difference. It would be like setting a trap for some animal. You might set one for a rat and catch a bear… or the other way around.”