# Knowledge → Skills → Wisdom — retrieval verified

User retrieved all three layers with correct difficulty roles:

1. Knowledge: difficulty = enemy (认知过载). Skills: difficulty = tool (磨砺).
2. Common mistake: seeking difficulty during knowledge input (hard to parse), coasting during skill practice (fluency illusion).
3. 轻 = simplify and chunk to avoid cognitive overload. 重 = emphasize AND intensify deliberate practice. Wisdom = seek real feedback.

## Generated metaphors (not in the lesson)

- **磨砺** (grinding/polishing) — better than "difficulty as tool". Captures the iterative, abrasive nature of skill-building.
- **增肌要轻度撕裂** (muscle grows from micro-tears) — maps perfectly to desirable difficulty. Tear too little → no growth (fluency). Tear too much → injury (cognitive overload / giving up).

These self-generated metaphors indicate deep processing, not surface recall.

## Implications

User is internalizing the teach skill's framework at the Skills level — they can now apply the Knowledge/Skills/Wisdom lens to their own learning process. Next lesson should target: (1) Zone of Proximal Development, or (2) the workspace structure design (why MISSION.md + reference/ + lessons/ + learning-records/). User's "增肌" metaphor suggests they're ready for ZPD — it's the natural next question: "how do I know the right weight to lift?"