Keeping his voice as calm as possible, Tom said: “I want this one fixed. I’m not getting another.”

“I’ll do what I can. But it won’t be the same as it was. The damage goes pretty deep. I’d advise you to trade it in—you can get damn near what you paid. With the new models coming out in a month or so, the salesmen are eager as hell to—”

“Let me get this straight.” Shakily, Tom Fields lit up a cigarette. “You people really don’t want to fix these, do you? You want to sell brand-new ones, when these break down.” He eyed the repairman intently. “Break down, or are knocked down.”

The repairman shrugged. “It seems like a waste of time to fix it up. It’s going to get finished off, anyhow, soon.” He kicked the misshapen green hull with his boot. “This model is around three years old. Mister, it’s obsolete.”

“Fix it up,” Tom grated. He was beginning to see the whole picture; his self-control was about to snap. “I’m not getting a new one! I want this one fixed!”

“Sure,” the serviceman said, resigned. He began making out a work-order sheet. “We’ll do our best. But don’t expect miracles.”

While Tom Fields was jerkily signing his name to the sheet, two more damaged Nannies were brought into the repair building.

“When can I get it back?” he demanded.

“It’ll take a couple of days,” the mechanic said, nodding toward the rows of semi-repaired Nannies behind him. “As you can see,” he added leisurely, “we’re pretty well full-up.”

“I’ll wait,” Tom said tautly. “Even if it takes a month.”

“Let’s go to the park!” Jean cried.

So they went to the park.

It was a lovely day, with the sun shining down hotly and the grass and flowers blowing in the wind. The two children strolled along the gravel path, breathing the warm-scented air, taking deep breaths and holding the presence of roses and hydrangeas and orange blossoms inside them as long as possible. They passed through a swaying grove of dark, rich cedars. The ground was soft with mold underfoot, the velvet, moist fur of a living world beneath their feet. Beyond the cedars, where the sun returned and the blue sky flashed back into being, a great green lawn stretched out.

Behind them Nanny came, trudging slowly, her treads clicking noisily. The dragging grapple had been repaired, and a new optic unit had been installed in place of the damaged one. But the smooth coordination of the old days was lacking; and the clean-cut lines of her hull had not been restored. Occasionally she halted, and the two children halted, too, waiting impatiently for her to catch up with them.

“What’s the matter, Nanny?” Bobby asked her.

“Something’s wrong with her,” Jean complained. “She’s been all funny since last Wednesday. Real slow and funny. And she was gone, for awhile.”

“She was in the repair shop,” Bobby announced. “I guess she got sort of tired. She’s old, Daddy says. I heard him and Mommy talking.”

A little sadly they continued on, with Nanny painfully following. Now they had come to benches placed here and there on the lawn, with people languidly dozing in the sun. On the grass lay a young man, a newspaper over his face, his coat rolled up under his head. They crossed carefully around him, so as not to step on him.

“There’s the lake!” Jean shouted, her spirits returning.

The great field of grass sloped gradually down, lower and lower. At the far end, the lowest end, lay a path, a gravel trail, and beyond that, a blue lake. The two children scampered excitedly, filled with anticipation. They hurried faster and faster down the carefully-graded slope, Nanny struggling miserably to keep up with them.

“The lake!”

“Last one there’s a dead Martian stinko-bug!”

Breathlessly, they rushed across the path, onto the tiny strip of green bank against which the water lapped. Bobby threw himself down on his hands and knees, laughing and panting and peering down into the water. Jean settled down beside him, smoothing her dress tidily into place. Deep in the cloudy-blue water some tadpoles and minnows moved, minute artificial fish too small to catch.

At one end of the lake some children were floating boats with flapping white sails. At a bench a fat man sat laboriously reading a book, a pipe jammed in his mouth. A young man and woman strolled along the edge of the lake together, arm in arm, intent on each other, oblivious of the world around them.

“I wish we had a boat,” Bobby said wistfully.

Grinding and clashing, Nanny managed to make her way across the path and up to them. She stopped, settling down, retracting her treads. She did not stir. One eye, the good eye, reflected the sunlight. The other had not been synchronized; it gaped with futile emptiness. She had managed to shift most of her weight on her less-damaged side, but her motion was bad and uneven, and slow. There was a smell about her, an odor of burning oil and friction.

Jean studied her. Finally she patted the bent green side sympathetically. “Poor Nanny! What did you do, Nanny? What happened to you? Were you in a wreck?”

“Let’s push Nanny in,” Bobby said lazily. “And see if she can swim. Can a Nanny swim?”

Jean said no, because she was too heavy. She would sink to the bottom and they would never see her again.

“Then we won’t push her in,” Bobby agreed.

For a time there was silence. Overhead a few birds fluttered past, plump specks streaking swiftly across the sky. A small boy on a bicycle came riding hesitantly along the gravel path, his front wheel wobbling.

“I wish I had a bicycle,” Bobby murmured.

The boy careened on past. Across the lake the fat man stood up and knocked his pipe against the bench. He closed his book and sauntered off along the path, wiping his perspiring forehead with a vast red handkerchief.

“What happens to Nannies when they get old?” Bobby asked wonderingly. “What do they do? Where do they go?”

“They go to heaven.” Jean lovingly thumped the green dented hull with her hand. “Just like everybody else.”

“Are Nannies born? Were there always Nannies?” Bobby had begun to conjecture on ultimate cosmic mysteries. “Maybe there was a time before there were Nannies. I wonder what the world was like in the days before Nannies lived.”

“Of course there were always Nannies,” Jean said impatiently. “If there weren’t, where did they come from?”

Bobby couldn’t answer that. He meditated for a time, but presently he became sleepy … he was really too young to solve such problems. His eyelids became heavy and he yawned. Both he and Jean lay on the warm grass by the edge of the lake, watching the sky and the clouds, listening to the wind moving through the grove of cedar trees. Beside them the battered green Nanny rested and recuperated her meager strength.

A little girl came slowly across the field of grass, a pretty child in a blue dress with a bright ribbon in her long dark hair. She was coming toward the lake.

“Look,” Jean said. “There’s Phyllis Casworthy. She has an orange Nanny.”

They watched, interested. “Who ever heard of an orange Nanny?” Bobby said, disgusted. The girl and her Nanny crossed the path a short distance down, and reached the edge of the lake. She and her orange Nanny halted, gazing around at the water and the white sails of toy boats, the mechanical fish.

“Her Nanny is bigger than ours,” Jean observed.

“That’s true,” Bobby admitted. He thumped the green side loyally. “But ours is nicer. Isn’t she?”

Their Nanny did not move. Surprised, he turned to look. The green Nanny stood rigid, taut. Its better eye stalk was far out, staring at the orange Nanny fixedly, unwinkingly.

“What’s the matter?” Bobby asked uncomfortably.

“Nanny, what’s the matter?” Jean echoed.

The green Nanny whirred, as its gears meshed. Its treads dropped and locked into place with a sharp metallic snap. Slowly its doors retracted and its grapples slithered out.