Becky Chambers, A Prayer for the Crown-Shy (2022).
Here's an extract:
They ran a hand through their hair. They’d never had to explain pebs before.
“Okay. Anytime you receive anything that involves some sort of craft or work or labor or whatever from someone else, you give them pebs in exchange. So, let’s say you start out with zero pebs.”
“Which is true, for me.”
“Yes. Let’s also say you go to a farmer and get an apple, and let’s say that’s worth one peb to you.”
“What would I do with an apple?”
“Just pretend you can eat apples.”
“All right.”
“Okay. You take the apple, and you give the farmer one peb.”
“How?” Mosscap asked.
“I’ll explain later,” Dex said. “Stick with the farmer for now.”
“If you say so.” Mosscap’s eyes shifted in thought. “I currently have one hypothetical apple and negative-one hypothetical pebs.”
“Right. The farmer’s work has benefited you, so now you need to provide something to benefit someone else.”
“To the farmer, you mean.”
“No.” Dex tried to explain. “It can be to the farmer, if you provide something the farmer wants. But exchanging pebs isn’t about bartering. It’s about benefit. You are a part of the community, and the farmer doing something for you means that they are, effectively, doing something for the group. So, you’ve got your negative-one-peb balance now. You’ve got to fill that up. Let’s say you’re … I don’t know. A musician. You go play some music in a town square, and five people come to listen. They now give you some pebs. If they each give you two pebs, now you’ve got nine pebs, which you can exchange for other things. Make sense?”
“I believe so,” Mosscap said. “You’re saying that instead of a system of currency that tracks individual trade, you have one that facilitates exchange through the community. Because … all exchange benefits the community as a whole?”
“Exactly.”
“Do people give you pebs for tea?”
“Yes.”
“And then you give them pebs for…”
“Food, or supplies, or whatever.” Mosscap’s head whirred softly. “The farmer feeds the musician, who brings music to the village.” It paused, the whirring growing louder. “The technician who took a break to enjoy the music now has the energy to go fix the communications tower. The communications tower enables the meteorologist to deliver the weather report, which helps the farmer grow more apples. I see.” The robot nodded. “And I’m not penalized for the debt I incurred at the start?”
“Absolutely not,” Dex said firmly. “We don’t … we don’t do that. Or we don’t do that anymore, I guess.” Gods around, history class was a long time ago. “Nobody should be barred from necessities or comforts just because they don’t have the right number next to their name.” As they said this, they thought of their unease back at the hot spring—the feeling that had arisen at the thought they hadn’t earned this. The mismatch between these sentiments itched at them. They nudged it aside to deal with later.
Mosscap nodded again at their explanation. “But if there’s no penalty for debt, what’s to stop you from taking without giving back?”
“It’s a bad feeling,” Dex said. “Everybody has a negative balance from time to time, for lots of reasons. That’s fine. That’s part of the ebb and flow. But if someone had a huge negative … well, that says they need help. Maybe they’re sick. Or stuck. Maybe they’ve got something going on at home. Or maybe it’s just one of those times when they need other people to carry them for a while. That’s okay. Everybody ends up there sometimes. If I saw a friend’s balance and it was way in the red, I’d make a point of checking in.”
“You can see other people’s balances?”
“Yeah, of course. It’s all public.”
“Does that not get competitive?”
Dex squinted. “Why would it?”
Mosscap stared at Dex in silence for a moment, seemingly surprised at this but not elaborating as to why. It shrugged, then pointed at the paper in Dex’s hands. “So, these…”
“Are the pebs people gave you for helping them out.” Dex handed the paper back. “You got twelve pebs for the door, eight pebs for the bike, and so on. Normally, we do this on a pocket computer—”