What is precision metric?

Precision metric is a concept in personal epistemology: An agent that fires when it shouldn't wastes your attention and erodes trust.

Example: You build an agent that triggers a 'take a break' reminder every time your heart rate rises above 90 bpm. It fires during your morning run, while you carry groceries upstairs, and when you laugh hard at a joke. Within a week you stop reading the reminders entirely. The agent still fires. You no longer care. When you actually are stress-spiraling at 2 a.m. with a racing heart, you swipe the notification away on reflex. The signal was real. The agent had cried wolf too many times for you to notice.

This concept is part of Phase 28 (Agent Monitoring) in the How to Think curriculum, which builds the epistemic infrastructure for agent monitoring.