"You be sure and stay home, and be in bed by nine thirty, Paul," she said. "Promise?"
"Ah, Mom," he protested. "Well, all right."
Dr. MacNare came into the room, still working on his tie. A moment later they went out the front door. They had been gone less than five minutes when there was a knock. Paul jumped to his feet and opened the door.
"Hi, Fred, Tony, Bill," he said.
The boys, all nine years old, sprawled on the rug and watched television. It became eight o'clock, eight thirty, and finally five minutes to nine. The commercial began.
"Where's your bathroom?" Tony asked.
"In there," Paul said, pointing vaguely at the doorway to the hall.
Tony got up off the floor and went into the hall. He saw several doors, all looking much alike. He picked one and opened it. It was dark inside. He felt along the wall for a light switch and found it. Light flooded the room. He stared at what he saw for perhaps ten seconds, then turned and ran down the hall to the living room.
"Say, Paul!" he said. "You never said anything about having a real honest to gosh robot!"
"What are you talking about?" Paul said.