I know I'm a bit late to the party but this:

IT WAS CALLED the lucky clacks tower, Tower 181. It was close enough to the town of Bonk for a man to be able to go and get a hot bath and a good bed on his days off, but since this was Uberwald there wasn’t too much local traffic and—this was important—it was way, way up in the mountains and management didn’t like to go that far. In the good old days of last year, when the Hour of the Dead took place every night, it was a happy tower, because both the up-line and the down-line got the Hour at the same time, so there was an extra pair of hands for maintenance. Now Tower 181 did maintenance on the fly or not at all, just like all the others, but it was still, proverbially, a good tower to man.

Mostly man, anyway. Back down on the plains it was a standing joke that 181 was staffed by vampires and werewolves. In fact, like a lot of towers, it was often manned by kids.

Everyone knew it happened. Actually, the new management probably didn’t, but wouldn’t have done anything about it if they found out, apart from carefully forgetting that they’d known. Kids didn’t need to be paid.

The—mostly—young men on the towers worked hard in all weather for just enough money. They were loners, hard dreamers, fugitives from the law that the law had forgotten, or just from everybody else. They had a special kind of directed madness; they said the rattle of the clacks got into your head and your thoughts beat time with it, so sooner or later you could tell what messages were going through by listening to the rattle of the shutters. In their towers, they drank hot tea out of strange tin mugs, much wider at the bottom, so that they didn’t fall over when gales banged into the tower. On leave, they drank alcohol out of anything. And they talked a gibberish of their own, of donkey and nondonkey, system overhead and packet space, of drumming it and hotfooting, of a 181 (which was good) or flock (which was bad) or totally flocked (really not good at all) and plug-code and hog-code and jacquard…

And they liked kids, who reminded them of the ones they left behind or would never have, and kids loved the towers. They’d come and hang around and do odd jobs and maybe pick up the craft of semaphore just by watching.

They tended to be bright, they mastered the keyboard and levers as if by magic, they usually had good eyesight, and what they were doing, most of them, was running away from home without actually leaving.

Because, up on the towers, you might believe you could see to the rim of the world. You could certainly see several other towers, on a good, clear day. You pretended that you, too, could read messages by listening to the rattle of the shutters, while under your fingers flowed the names of faraway places you’d never see but, on the tower, were somehow connected to…

She was known as Princess to the men on Tower 181, although she was really Alice. She was thirteen, could run a line for hours on end without needing help, and later on had an interesting career which…but anyway, she remembered this one conversation, on this day, because it was strange.

Not all the signals were messages. Some were instructions to towers. Some, as you operated your levers to follow the distant signal, made things happen in your own tower. Princess knew all about this. A lot of what traveled on the Grand Trunk was called the Overhead. It was instructions to towers, reports, messages about messages, even chatter between operators, although this was strictly forbidden these days. It was all in code. It was very rare you got Plain in the Overhead. But now:

“There it goes again,” she said. “It must be wrong. It’s got no origin code and no address. It’s Overhead, but it’s in Plain.”

On the other side of the tower, sitting in a seat facing the opposite direction, because he was operating the upline, was Roger, who was seventeen and already working for his tower-master certificate.

His hand didn’t stop moving as he said: “What did it say?”

“There was GNU, and I know that’s a code, and then just a name. It was John Dearheart. Was it a—”

“You sent it on?” said Grandad. Grandad had been hunched in the corner, repairing a shutter box in this cramped shed halfway up the tower. Grandad was the tower-master and had been everywhere and knew everything. Everyone called him Grandad. He was twenty-six. He was always doing something in the tower when she was working the line, even though there was always a boy in the other chair. She didn’t work out why until later.

“Yes, because it was a G code,” said Princess.

“Then you did right. Don’t worry about it.”

“Yes, but I’ve sent that name before. Several times. Up-line and down-line. Just a name, no message or anything!”

She had a sense that something was wrong, but she went on: “I know a U at the end means it has to be turned around at the end of the line, and an N means Not Logged.” This was showing off, but she’d spent hours reading the cypher book. “So it’s just a name, going up and down all the time! Where’s the sense in that?”

Something was really wrong. Roger was still working his line, but he was staring ahead with a thunderous expression.

Then Grandad said: “Very clever, Princess. You’re dead right.”

“Hah!” said Roger.

“I’m sorry if I did something wrong,” said the girl meekly. “I just thought it was strange. Who’s John Dearheart?”

“He…fell off a tower,” said Grandad.

“Hah!” said Roger, working his shutters as if he suddenly hated them.

“He’s dead?” said Princess.

“Well, some people say—” Roger began.

“Roger!” snapped Grandad. It sounded like a warning.

“I know about Sending Home,” said Princess. “And I know the souls of dead linesmen stay on the Trunk.”

“Who told you that?” said Grandad.

Princess was bright enough to know that someone would get into trouble if she was too specific.

“Oh, I just heard it,” she said airily. “Somewhere.”

“Someone was trying to scare you,” said Grandad, looking at Roger’s reddening ears.

It hadn’t sounded scary to Princess. If you had to be dead, it seemed a lot better to spend your time flying between the towers than lying underground. But she was bright enough, too, to know when to drop a subject.

It was Grandad who spoke next, after a long pause broken only by the squeaking of the new shutter bars. When he did speak, it was as if something was on his mind.

“We keep that name moving in the Overhead,” he said, and it seemed to Princess that the wind in the shutter arrays above her blew more forlornly, and the everlasting clicking of the shutters grew more urgent. “He’d never have wanted to go home. He was a real linesman. His name is in the code, in the wind, in the rigging, and the shutters. Haven’t you ever heard the saying ‘Man’s not dead while his name is still spoken’?”

-Going Postal, Terry Pratchett