---
name: principle-encode-lessons-in-structure
description: Apply when you catch yourself writing the same instruction a second time,
  or notice a recurring correction. Encode the rule as a lint, metadata flag, runtime
  check, or script instead of more text.
---

Host integration: first read [HOSTS.md](../../pstack-resources/HOSTS.md); it maps the upstream workflow to the current agent host.

# Encode Lessons in Structure

If the lesson needs judgment and cannot be encoded, make the instruction more prominent and add an example of the failure mode.

**Corollary:** If the fix is structural, only use the structural fix. The instruction is the symptom.