iran woke.

  The word didn't capture it. He slammed back into himself, into the narrow bed and the cold room and the pale morning light, and for a moment he had no idea who he was or where he was or how long he'd been gone.

  Coren. The mountains. The stone workshop. Decades of watching, recording, understanding.

  Gone. All of it gone, fading like morning mist, leaving only fragments behind.

  But not all fragments.

  Eiran sat up, gasping. His body felt wrong, too young and too soft, lacking the calluses and scars of a lifetime in the mountains. His hands were shaking. His stomach was empty in a way that went beyond hunger, as if he'd been fasting for days instead of sleeping for hours.

  The pressure of the air.

  That part was still there. That part was clear, crystalline, more real than the room around him. He understood it now, not intellectually and not as a theory, but as a truth felt in his bones. The air had weight. The weight changed. The changes preceded the weather.

  He needed paper. Something to write with.

  His hands moved before his mind caught up, searching the room for materials. A scrap of paper torn from an old notice. A piece of charcoal from the cold hearth. Not proper tools, but enough.

  Eiran sketched.

  The device came first: a tube, sealed at one end, open at the other, the open end submerged in a reservoir of mercury. The column would rise and fall as the pressure changed, the weight of the air pushing the liquid up or letting it sink. Simple. Obvious. He couldn't believe he hadn't seen it before.

  Then the calibration marks. A scale etched into the glass, allowing measurements to be read and recorded. Consistent observations over time, building a record of correlation.

  Then the theory itself, scrawled in hurried words: Air has weight. Weight = pressure. Pressure changes before weather. Measure pressure → predict weather.

  He stopped. The charcoal was wearing down to nothing. The paper was covered with cramped writing and sketches. His hands had finally stopped shaking.

  An hour had passed. Maybe more. The light through his window had shifted from pale grey to golden morning.

  He should be at the workshop. Havelock would be expecting him.

  But Eiran couldn't move. He stared at the paper in his hands, at the truth he'd somehow known without learning, and tried to understand what had happened to him.

  A dream. It had been a dream, nothing more. Coren wasn't real. The stone workshop wasn't real. The decades of observation and the lowland scholars and the storm that almost killed him, none of it was real.

  But the truth was real.

  The truth was sitting in his hands, sketched in charcoal on scrap paper, waiting to be built and tested and proven.

  ---

  He was three hours late to the workshop.

  Havelock looked up when he entered, then looked again, his expression shifting from irritation to something more careful.

  "You look," he said slowly, "like a man who's seen a ghost."

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  "I'm sorry I'm late. I-" Eiran stopped. What could he say? I dreamed I was someone else for years. I woke up with knowledge I never learned. I think I understand something about the air.

  "Sit down." Havelock crossed to the small stove where a kettle sat warming. "Tea. You need tea, and probably food. When did you last eat?"

  "I don't remember."

  "Then it's been too long." Havelock poured two cups, handed one to Eiran. "Drink. Slowly. Don't talk yet."

  The tea was bitter and strong. Eiran drank it and felt warmth spread through his chest, pushing back the strange cold that had settled there since waking. When the cup was half empty, the shaking in his hands finally stopped.

  "I sent Tommin and Pol home," Havelock said. "Told them we had precision work that needed quiet. They won't be back until afternoon."

  "Why?"

  "Because you walked in here looking like death warmed over, carrying something in your hands like it was made of glass." Havelock nodded at the paper still clutched in Eiran's grip. "What is it?"

  Eiran looked down at his sketches. The charcoal lines were smudged now, blurred from being carried, but still legible.

  "I don't know how to explain."

  "Try."

  "I had a dream." The words felt strange in his mouth, too simple for what had happened, too ordinary. "Not like normal dreams. I was... someone else. For a long time. Years. I lived another life, and in that life I discovered something."

  Havelock's face gave nothing away. "What did you discover?"

  Eiran smoothed the paper on the workbench between them. "The air has weight. Pressure, pushing down on everything. And that pressure changes. Before storms come, it drops. Before clear weather, it rises. You can measure it, if you build the right instrument."

  "A barometer."

  "Yes." Eiran looked up sharply. "You know about this?"

  "I know the word. I've seen instruments that claim to predict weather." Havelock's voice was careful, neutral. "They're not reliable. The correlation isn't consistent enough to be useful."

  "Because they're not calibrated properly. Temperature affects the readings. The mercury expands when it's warm. You need to compensate for that. And you need to take consistent measurements, over time, to understand the patterns." Eiran's words were coming faster now, the knowledge pouring out of him all at once, unstoppable. "I know how to do it. I don't know how I know, but I do. I can see it: the design, the calibration method, the whole system."

  Havelock was quiet for a long moment. His eyes stayed on the sketches, tracing the lines, the equations, the fragmentary notes.

  "You dreamed this," he said finally.

  "Yes."

  "All of it. The design. The theory. The compensation techniques."

  "Yes."

  Another silence. Havelock picked up the paper, examined it more closely. His expression was unreadable.

  "This is real knowledge," he said. "Not fantasy, not fever-imagining. This is the kind of understanding that takes years to develop. Decades, maybe. And you're telling me it came to you in a single night's sleep."

  "I know how it sounds."

  "Do you?" Havelock set the paper down. "You know about the dreams, then. What they can mean."

  "I don't know anything. I just woke up with this in my head, and I couldn't stop. I had to write it down. I had to get it out before it faded."

  "But it hasn't faded. Has it?"

  Eiran hesitated. "No. The images are gone. The life I dreamed, that's fading. But the knowledge is still there. Clear as anything I've ever learned."

  Havelock nodded slowly, as if this confirmed something he'd suspected. "Don't tell anyone else about this. Not Tommin, not Pol, not anyone at the tavern. Not until we understand what you have."

  "What do I have?"

  "I don't know yet." Havelock picked up the sketches again, his eyes calculating. "But if this is what I think it is, if this knowledge actually works, it could be worth something. Real money. Real recognition."

  Recognition. The word settled into place, replacing something he hadn't known was missing. Recognition from the city institutions, from the patent offices, from the world that had never noticed him before.

  "I want to build it," he said. "The device. I want to see if it works."

  "We'll build it together. Carefully, quietly. No need to rush." Havelock folded the paper and tucked it into his vest pocket. "I'll keep these safe. You should rest. You look like you haven't slept in days."

  "I slept. I think I slept too much."

  "Then eat. There's bread in the back." Havelock's hand landed on Eiran's shoulder, warm and firm. "You did right to bring this to me. Whatever this is, whatever it means, we'll figure it out together."

  Eiran nodded. The relief was enormous, a weight lifting from his shoulders that he hadn't realized he was carrying.

  Havelock would help. Havelock understood. Whatever had happened to him, whatever Coren's life meant or whatever the dreams were trying to tell him, he wasn't alone anymore.

  He went to the back room and ate bread and drank more tea and tried not to think about the paper in Havelock's pocket, the sketches that held everything he'd learned in a lifetime he'd never actually lived.

  The knowledge was real. He told himself that, eating slowly in the quiet back room, and almost believed it.