He came riding a battered bicycle down the bullet-scarred highway that wound among the hills, and he whistled a tortuous flight of the blues. Hot August sunlight glistened on his forehead and sparkled in droplets that collected in his week's growth of blond beard. He wore faded khaki trousers and a ragged shirt, but his clothing was no shabbier than that of the other occasional travelers on the road. His eyes were half closed against the glare of the road, and his head swayed listlessly to the rhythm of the melancholy song. Distant artillery was rumbling gloomily, and there were black flecks of smoke in the northern sky. The young cyclist watched with only casual interest.

The bombers came out of the east. The ram jet fighters thundered upward from the outskirts of the city. They charged, spitting steel teeth and coughing rockets at the bombers. The sky snarled and slashed at itself. The bombers came on in waves, occasionally loosing an earthward trail of black smoke. The bombers leveled and opened their bays. The bays yawned down at the city. The bombers aimed. Releases clicked. No bombs fell. The bombers closed their bays and turned away to go home. The fighters followed them for a time, then returned to land. The big guns fell silent. And the sky began cleaning away the dusky smoke.

The young cyclist rode on toward the city, still whistling the blues. An occasional pedestrian had stopped to watch the battle.

"You'd think they'd learn someday," growled a chubby man at the side of the road. ^"You'd think they'd know they didn't drop anything. Don't they realize they're out of bombs?"

"They're only machines, Edward," said a plump lady who stood beside him. "How can they know?^"

"Well, they're supposed to think. They're supposed to be able to learn."

The voices faded as he left them behind. Some of the wanderers who had been walking toward the city now turned around and walked the other way. Urbanophiles looked at the city and became urbanophobes. Occasionally a wanderer who had gone all the way to the outskirts came trudging back. Occasionally a phobe stopped a phile and they talked. Usually the phile became a phobe and they both walked away together. As the young man moved on, the traffic became almost nonexistent. Several travelers warned him back, but he continued stubbornly. He had come a long way. He meant to return to the city. Permanently.

He met an old lady on top of a hill. She sat in an antique chair in the center of the highway, staring north. The chair was light and fragile, of hand-carved cherry wood. A knitting bag lay in the road beside her. She was muttering softly to herself: "Crazy machines! War's over. Crazy machines! Can't quit fightin'. Somebody oughta-"

He cleared his throat softly as he pushed his bicycle up beside her. She looked at him sharply with haggard eyes set in a seamy mask.

"Hi!" he called, grinning at her.

She studied him irritably for a moment. "Who're you, boy?" "Name's Mitch Laskell, Grandmaw. Hop on behind. 1'11 give you a ride."

"Hm-m-m! I'm going t'other way. You will, too, if y'got any sense."

Mitch shook his head firmly. "I've been going the other way too long. I'm going back, to stay."

"To the city? Haw! You're crazier than them machines." His face fell thoughtful. He kicked at the bike pedal and stared at the ground. "You're right, Grandmaw."

"Right?"

"Machines-they aren't crazy. It's just people."

"Go on!" she snorted. She popped her false teeth back in her mouth and chomped them in place. She hooked withered hands on her knees and pulled herself wearily erect. She hoisted the antique chair lightly to her shoulder and shuffled slowly away toward the south.

Mitch watched her and marveled at the tenacity of life. Then he resumed his northward journey along the trash-littered road where motor vehicles no longer moved. But the gusts of wind brought faint traffic noises from the direction of the city, and he smiled. The sound was like music, a deep-throated whisper of the city's song.

There was a man watching his approach from the next hill. He sat on an apple crate by the side of the road, and a shotgun lay casually across his knees. He was a big, red-faced man, wearing a sweat-soaked undershirt, and in the sun his eyes were narrowed to slits. He peered fixedly at the approaching cyclist, then came slowly to his feet and stood as if blocking the way.

"Hi, fellow," he grunted.

Mitch stopped and gave him a friendly nod while he mopped his face with a kerchief. But he eyed the shotgun suspiciously. "If this is a stickup-"

The big man laughed. "Naw, no heist. Just want to talk to you a minute. I'm Frank Ferris." He offered a burly paw. "Mitch Laskell."

They shook hands gingerly and studied each other. "Why you heading north, Laskell?"

"Going to the city."

"The planes are still fighting. You know that?"

"Yeah. I know they've run out of bombs, too."

"You know the city's still making the Geigers click?"

Mitch frowned irritably. "What is this? There can't be much radioactivity left. It's been three years since they scattered the dust. I'm not corn-fed, Ferris. The half-life of that dust is five months. It should be less than one per cent-"

The big man chuckled. "Okay, you win. But the city's not safe anyhow. The Central Computer's still at work."

"So what?"

"Ever think what would happen to a city if every ordinance was kept in force after the people cleared out?"

Mitch hesitated, then nodded. "I see. Thanks for the warning." He started away.

Frank Ferris caught the handlebars in a big hand. "Hold on!" he snapped. "I ain't finished talking."

The smaller man glanced at the shotgun and swallowed his anger.

"Maybe your audience isn't interested, Buster," he said with quiet contempt.

"You will be. Just simmer down and listen!"

"I don't hear anything."

Ferris glowered at him. "I'm recruitin' for the Sugarton crowd, Laskell. We need good men."

"Count me out. I'm a wreck."

"Cut the cute stuff, boy! This is serious. We've got two dozen men now. We need twice that many. When we get them we'll go into the city and dynamite the Computer installations. Then we can start cleaning it up."

^"Dynamite? Why?" Mitch Laskell's face slowly gathered angry color.

"So people can live in it, of course. So we can search for food without having a dozen mechanical cops jump us when we break into a store."

"How much did Central cost?" Mitch asked stiffly. It was a rhetorical question.

Ferris shook his head irritably. "What does that matter now? Money's no good anyway. You can't sell Central for junk. Heh, heh! Wake up, boy!"

The cyclist swallowed hard. A jaw muscle tightened in his cheek, but his voice came calmly.

"You help build Central, Ferris? You help design her?"

"Wh-why, no! What kind of a question is that?"

"You know anything about her? What makes her work? How she's rigged to control all the subunits? You know that?" "No, I-"

"You got any idea about how much sweat dripped on the drafting boards before they got her plans drawn? How many engineers slaved over her, and cussed her, and got drunk when their piece of the job was done?"

Ferris was sneering faintly. "You know, huh?"

"Yeah."

"Well that's all too bad, boy. But she's no good to anybody now. She's a hazard to life and limb. Why, you can't go inside the city without-"

"She's a machine, Ferris. An intricate machine. You don't destroy a tool just because you're finished with it for a while." They glared at each other in the hot sunlight.

"Listen, boy-people built Central. People got the right to wreck her, too."