Harry felt the rumbling beneath him. Engines?
"You survived," the doctor said. "Your wife. A few hundred others in the rural areas. One other family in your area. I survived because I lived for survival, like a mole deep in the earth, expecting the catastrophe every minute. I survived because I gave up living to survive." He laughed, high and thin.
His son said, "Please, Dad...."
"No! I want to talk to someone sane! You and Petey and I—we're all insane, you know. Three years now, playing God, waiting for some land, any land, to become habitable. And knowing everything, and surrounded by people who are sane only because I made sure they would know nothing." He stepped forward, glaring at Harry. "Now do you understand? I went across the country, picking up a few of the few left alive. Most were farmers, and even where some weren't I picked the farmers anyway. Because farmers are what we'll need, and all the rest can evolve later. I put you and the others, eighty-six all told, from every section of the country, on my world, the only uncontaminated land left. I gave you back your old lives. I couldn't give you big crops because we don't need big crops. We would only exhaust our limited soil with big crops. But I gave you vegetable gardens and livestock and, best of all, sanity! I wiped the insane moments from your minds. I gave you peace and consigned myself, my sons, my own wife...."
He choked and stopped.
Stan ran across the room to the switch. Harry watched him, and his brain struggled with an impossible concept. He heard the engines and remembered the ocean on two sides; on four sides had he bothered to check south and east; on all sides if that fence continued to curve inward. Ocean, and there was no ocean in Iowa.
And this wasn't Iowa.
The explosions had ripped the world, and he'd tried to get to town to save Davie, and there'd been no town and there'd been no people and there'd been only death and poison in the air and even those few people left had begun to die, and then the truck with the huge trailer had come, the gleaming trailer with the little man and his trembling wife and his two sons....
Suddenly, he understood. And understanding brought not peace but the greatest terror he'd ever known. He screamed, "We're on...." but the switch was thrown and there was no more speech. For an hour. Then he got out of the chair and said, "Sure glad I took my wife's advice and came to see you, Doctor Hamming. I feel better already, and after only one.... What do you call these treatments?"