Rowan woke to voices drifting through his window. He dressed quickly and descended to the garden, where he stopped in the doorway.
The table had been transformed. Croissants, pain au chocolat, at least six different jams, soft cheeses he didn't recognize, sliced fruits arranged in careful patterns, and a bottle of something that sparkled with colours he'd never seen liquid take before. Nicholas and Perenelle sat at the table in traveling robes. Deep blue for Nicholas, forest green for Perenelle. Both looking enormously pleased with themselves.
"Happy birthday, Rowan!" Nicholas announced. "Well, happy estimated birthday. You don't actually know when you were born, do you? But Perenelle worked it out. Come, sit, eat. Perenelle, show him the calculations."
Perenelle spread a piece of parchment across the table, pushing jam jars aside to make room. It was covered in astronomical charts, mathematical notations, and what appeared to be a drawing of Rowan's magical signature rendered in silver ink.
"You were born on August fifteenth," she said. "Twelve years ago today, at approximately three in the morning. The calculations took me most of the night, but I'm confident within a margin of six hours either direction."
"How?" Rowan asked, sliding into a chair and staring at the parchment. He could make out planetary positions, angles between celestial bodies, complex equations linking them to the swirls and patterns of the magical signature.
"Astronomical divination." Perenelle tapped the largest diagram. "When you're born, the positions of the planets and stars create a unique pattern. That pattern influences your magical signature. Leaves traces in the very structure of your magic. I examined your signature yesterday while you were distilling the mercury essence, mapped its astronomical components, then worked backward through sixty years of planetary positions until I found the configuration that matched."
"Divination actually works?" Rowan couldn't keep the skepticism from his voice. Everything he'd read about divination portrayed it as either fraud or guesswork.
"Real divination works," Nicholas said, spreading jam on a croissant with great concentration. "The problem is that ninety percent of people claiming to practice divination are charlatans or deluded. They see vague patterns in tea leaves and make vaguer predictions. But genuine divination, astronomical, numerical, runic, can reveal accurate information about past, present, and future. It's mathematics, really. Extraordinarily complex mathematics operating on probability spaces and temporal mechanics."
"The future is not fixed," Perenelle added. "That's where most diviners go wrong. They treat it as though there's one inevitable outcome. Actually, the future is a probability field. Infinite possible outcomes, each with different likelihood based on current conditions. Skilled divination maps that field, identifies the most probable branches, calculates how specific choices will shift the probabilities."
She pulled out another parchment, this one covered in what looked like a tree diagram with thousands of branching paths. "This is a probability map I created last week, examining potential outcomes for your communication device research. See here. If you pursue the central hub design, seventy-three percent probability of success within five years, but only if you master security runic arrays first. If you try to skip that step, ninety-one percent probability of catastrophic security failure within two years of deployment."
Rowan studied the branching paths, fascinated despite himself. This wasn't mystical nonsense. This was systematic analysis of cause and effect, probability theory applied to magical outcomes.
"But how can you calculate magical probability?"
"The same way you calculate physical probability," Nicholas said. "You identify the relevant variables, determine how they interact, apply mathematical models to project likely outcomes. Magic follows rules, even if we don't fully understand all of them yet. Those rules create patterns. Patterns can be analyzed."
"Anyway," Perenelle said, rolling up the parchments, "the point is: today is your birthday. We've decided you need a day off."
"I don't need—"
"Yes, you do." Nicholas's tone was gentle but firm. "You've been working from sunrise to midnight every day for six weeks. You're twelve years old, Rowan. When I was twelve, I spent half my time climbing trees and the other half getting into trouble with the village boys. You're absorbing alchemical theory and runic arrays like you're preparing for Mastery examinations."
"I have a lot to learn."
"And you'll learn it faster if you occasionally rest." Perenelle stood, brushing crumbs from her robes. "We're taking you to Paris. The real Paris. The magical quarters. You need to see the world, not merely study it."
The protest died in Rowan's throat. They looked so hopeful, so determined to give him something he hadn't asked for but they clearly thought he needed. And perhaps they were right. He couldn't remember the last time he'd done something purely for enjoyment rather than advancement.
"All right," he said. "Thank you."
After breakfast, they took a Portkey. An old wine bottle that Nicholas insisted had once contained "an absolutely magnificent Bordeaux, shame to use it for transportation really." And landed in an alley behind what smelled like a bakery. Rowan's stomach was still settling when Nicholas tapped a brick in the wall with his wand.
The wall rippled like water, then simply wasn't there anymore. An archway stood in its place, leading through into sunlight and space and voices.
Rowan stepped through and stopped.