Annabeth came to him with blueprints.
Not metaphorical blueprints — actual architectural drawings, produced with the Athena-cabin's characteristic precision, on large sheets of drafting paper that she had been working on for two weeks. She spread them across the library table with the satisfaction of someone who has been waiting to do this for a long time.
'The new cabin integration,' she said. 'The camp's layout needs to be redesigned. The original horseshoe assumed twelve cabins and was optimized for that configuration. We now have twenty-three. The geometry is wrong — the new cabins are too far from the main facilities, which means their residents have a longer walk to the dining pavilion, training areas, and medical room. Over a summer season that's a meaningful disadvantage and it creates a subtle hierarchy of proximity that reinforces the major/minor god distinction we just spent a war breaking down.'
He looked at the drawings. She had been right, and she had been right for exactly the reason she stated. 'What do you propose?'
'Spiral,' she said. She pointed to the new configuration on the drawing: the cabins arranged in a widening spiral rather than a horseshoe, with the central facilities at the geometric center of the spiral rather than the open end. 'Equal distance from center for all cabins. No hierarchical positioning implied by proximity. And it's aesthetically more interesting than a horseshoe — it reads as a community that has grown organically rather than a structure that was built to a fixed plan.'
He studied the drawing. The layout was, he thought, correct in every relevant dimension. He also thought: this is what Annabeth does. She takes a problem that has existed for decades and solves it at the structural level, which is the only level at which it can be actually solved. She is thirteen and she is already thinking about architecture as an expression of values.
'Chiron will need to agree,' he said.
'I've already talked to him,' she said. 'He said it was exactly right and asked why it hadn't been done this way originally.' She paused. 'I said because the original design assumed the hierarchy rather than questioning it.'
He looked at her. 'What did Chiron say to that?'
She almost smiled. 'He said: yes, and then he was quiet for a while.'
'I'll back the proposal,' he said. 'Whatever you need from me.'
'I know,' she said. She was already rolling the drawings back up, confident in the outcome, which was the specific confidence of someone who has done the work and knows the work is correct. 'I'll need someone to run the structural magic assessment on the ground — the spiral placement will interact with the camp's existing divine energy patterns and I want to know if there are any resonance issues before construction begins.'
'I can do that,' he said. 'The earth-communication will read the energy distribution. Give me a week.'
She nodded. 'Good.' She picked up the drawings. Then, without looking up: 'We make a good team.'
He thought about the library, four years ago, a nine-year-old girl sitting down across from him with a scroll about the pre-Olympian era and asking if the seat was taken. He thought about every session since, every Capture the Flag, every honest conversation.
'Yes,' he said. 'We do.'