Strawberry's Descent

Gorthruk found a seat on an overturned crate, arms crossed, listening with the patient, weathered skepticism of a man who had heard a great many pitches in his lifetime and rarely regretted saying no to most of them.

"Explain it again," he said. "Slowly, this time."

"Water," Arista said, holding up an empty flask like a visual aid. "Heated until it boils. Steam expands, takes up way more space than the water did, pushes hard against anything in its way. If you trap that expansion in a sealed chamber with a piston inside, the steam pushes the piston, and the piston can drive literally anything mechanical you connect it to. Gears. Belts. My conveyor system, eventually, once I've actually built the thing."

Gorthruk sat with that for a long moment, stroking his beard slowly.

"...That sounds like magic."

"It's not magic. It's physics. Real-world, actual, non-magical physics, humans back home built entire civilizations on this exact principle, no mana involved anywhere in the process."

"We have magic," Gorthruk said, not unreasonably. "Real magic. Mana conduits, elemental binding, the whole apparatus. And in the whole time I've known you, I have never once seen you use a single drop of it. Every single thing you've built, from that first pickaxe to the boring rig to whatever green-veined nightmare you folded with me: all of it's been hammers, gears, and stubbornness. No spells. No runes."

"Because none of it needed magic. That's kind of the whole point." Arista grinned. "Physics is just as powerful, and it doesn't run out, doesn't need mana regeneration, doesn't care if you're a caster class or not. Anyone can build a fire hot enough to boil water. Anyone can shape a piston. It's not flashy. It's just reliable."

Gorthruk studied her for a long, considering moment, the same look he'd given her back at his own forge, weighing an unfamiliar claim against decades of hard-earned metallurgical instinct.

"You understand," he said finally, "that I have just committed the Republic to a significant contract based on a machine you already built and proved works. Everything since then has just been you talking. Convincingly, I'll grant you. But talking."

"Fair."

"So." He leaned forward slightly, folding his thick hands together. "Can you make me a prototype? Doesn't need to be full scale. Small. Something I can actually watch work with my own eyes before I sign anything committing dwarven coin to a machine that runs on boiled water, of all things."

Arista's grin widened immediately, already reaching for her notebook. "You want a demonstration model."

"I want to see the kettle turn a wheel, Strawberry. That's all I'm asking. Prove the principle small, before either of us commits to it large."

"...Okay, yeah. That's completely reasonable. Give me a couple days." She was already sketching, a compact firebox, a sealed water chamber, a simple piston no bigger than her forearm, connected to a small flywheel just large enough to demonstrate continuous rotation. "Small pressure vessel, small piston, small flywheel. Prove that steam alone, no cranking, no mana, can spin something on its own and keep spinning as long as the fire's fed."

"That's all I need to see."

"You're going to see a lot more than that," Arista said, grinning, already halfway through a rough sketch of valve timing she was fairly sure she was misremembering from her research binge but would absolutely fix before actually building anything. "But sure. Kettle turns a wheel. I can do that."

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Gorthruk rose from the crate, brushing dust from his knees, already turning to leave. "Two days, then. And Strawberry—"

"Yeah?"

"If it explodes," he said, entirely deadpan, "I would appreciate advance warning, so I'm not standing nearby when it does."

Arista laughed, already scribbling a note in the margin of her sketch: pressure relief valve, do NOT forget, ask Gorthruk about failure tolerances, underlined twice for good measure.

"No promises," she said cheerfully. "But I'll definitely warn you if I remember to be worried myself."

Two days turned out to be an accurate estimate, for once, the prototype itself was small enough that Arista's usual scale of ambition barely got a chance to spiral before the whole thing was already sitting, compact and unassuming, on her workbench.

A small firebox at the base, iron-walled and lined with clay to hold the heat. A sealed water chamber above it, no bigger than a cooking pot. A single piston, forearm-length, connected through a simple crank arm to a small flywheel she'd salvaged parts for from an old gear assembly.

[Item Crafted: Steam Demonstration Engine (Prototype)][Blacksmithing XP +45]

She fed the firebox, waited, watched the water chamber's pressure gauge, hand-etched, calibrated by guesswork and prior research in roughly equal measure, climb slowly toward the threshold she'd calculated.

The piston twitched first. Then, with a soft, mechanical hiss, it began to move: slow, steady strokes, driving the crank arm, spinning the small flywheel in a smooth, continuous rotation that needed no hands on it at all.

"...There she goes," Arista murmured, grinning at the tiny, tireless machine doing exactly what she'd promised it would.

Gorthruk arrived on schedule, arms crossed, watching the little flywheel spin with an expression that shifted, slowly, from professional skepticism into something closer to genuine, begrudging awe.

"...It just keeps turning," he said. "No crank. No hands."

"As long as the fire's fed and the water doesn't run dry, yeah." Arista gestured at the small, steady plume of steam venting from a safety valve she'd triple-checked before letting him anywhere near it. "Scale this up properly, and instead of four people rotating shifts on a conveyor belt, you've just got someone stoking a firebox every so often. The machine does the actual work."

Gorthruk watched it for a long moment in silence, clearly running the same mental math he always seemed to run, not whether the thing worked, which was now plainly obvious, but what it would actually cost him to have more of it.

"This is going to burn through wood like nothing I've ever seen," he said finally, more to himself than to her. "Full scale, running continuously, feeding a conveyor belt long enough to matter, that's not a firebox anymore, that's an entire furnace, eating fuel around the clock."

Arista's grin faltered slightly, the practical weight of the observation landing exactly where he'd meant it to. "...Yeah. Okay, fair. I hadn't actually done the math on sustained fuel consumption at scale. I was so focused on proving the principle I didn't think past 'small kettle, small flywheel.'"

"The Republic has forests, but not infinite ones. Not enough to feed a furnace like that indefinitely without stripping half a mountainside bare within a few years." Gorthruk rubbed his beard, thinking aloud now. "We'll need a sustainable source. Something that regrows faster than we could ever burn through it normally."

He glanced up at her, something calculating settling into his expression.

"We're going to need to talk to the elves. Their nature magic, accelerated growth, forest cultivation, that sort of thing. If anyone can keep a fuel supply renewing itself fast enough to keep pace with a machine like this, it's them."

Arista sat with that for a moment, then let out a short, delighted laugh. "So my steam engine just single-handedly created a diplomatic reason for dwarves and elves to actually need each other."

"Apparently so." Gorthruk didn't look entirely thrilled about it, the particular weariness of a man whose people had their own long, complicated history with elven kingdoms. "You have a talent for that. Solving one problem by creating an entirely different, more complicated one."

"It's basically my whole brand at this point."

"I've noticed." He watched the little flywheel spin a moment longer, then sighed, the sound of a man already resigning himself to a very long series of upcoming meetings. "I'll draft a proposal for the Republic's council. You'll want to be there when we approach the elves, you're the one who understands the actual mechanism, and frankly, you're the only demon most of these surface kingdoms are even willing to sit across a table from at this point."

"Spokesperson of the Demon Kind," Arista said solemnly, hand over her heart, echoing her own diplomatic bit from weeks earlier. "It's basically in the job description now."

"...I'm going to regret asking, aren't I."

"Only a little."

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