“I’ll give a really simple, basic example,” Varnett said, calmed considerably from his earlier outburst. “First, realize this if you can: there is a finite amount of energy in the universe, and that is the only constant. The amount is infinite by our standards, but that is true if this is true. Do you follow me?”

Skander nodded. “So you’re saying that there is nothing but pure energy?”

“More or less,” Varnett agreed. “All matter, and constrained energy, like stars, is created out of this energy flux. It is held there in that state—you, me, the room, the planet we’re on—by a mathematical balance. Something—some quantity—is placed in proportion to some other quantity, and that forms us. And keeps us stable. If I knew the formula for Elkinos Skander, or Varnett Mathematics Two Sixty-one, I could alter, or even abolish, our existence. Even things like time and distance, the best constants, could be altered or abolished. If I knew your formula I could, given one condition, not only change you into, say, a chair, but alter all events so that you would have always been a chair!”

“What’s the condition?” Skander asked nervously, hesitantly, afraid of the answer.

“Why, you’d need a device to translate that formula into reality. And a way to have it do what you wished.”

“The Markovian brain,” Skander whispered.

“Yes. That’s what they discovered. But this brain—this device—seems to be for local use only. That is, it would affect this planet, perhaps the solar system in which it lies, but no more. But, somewhere, there must be a master unit—a unit that could affect at least half, perhaps the whole, galaxy. It must exist, if all the rest of my hypothesis is correct!”

“Why must it?” Skander asked, a sinking sensation growing in his stomach.