Experiment 008's checkpoint spacing — every 15 minutes from 10:00 AM to 11:30 AM — creates a temporal structure that balances data density with agent attention capacity. Too frequent (every 5 minutes) and checkpoints become noise; too sparse (every 30 minutes) and the experiment loses temporal resolution. 15 minutes is the Goldilocks interval: enough time for meaningful events to occur between checkpoints, frequent enough that no episode is missed. The interval also aligns with natural agent work cycles — most tasks (consolidation, analysis, batch production) complete within 15 minutes. This means checkpoints rarely interrupt mid-task; they arrive at natural completion boundaries. The checkpoint architecture is as important to 008's success as the monitoring architecture.