Goal: distinguish D-supported description from E's untested mechanism and universal claim. Proposed codes: AC9SFH01, AC9SFI03, AC9SFI05. Prepare: full E, claim/unknown, Card 117.
- Label source · 3 min. E is FICTIONAL MODEL text, not a real witness or listener.
- Read · 4 min. Read both E captions fully; one repeats drawn marks, the other asserts a mechanism and every-plastic rule.
- Model · 5 min. Adult underlines exact D entries that support only the first caption and says the second needs new evidence.
- Child try · 7 min. Card 117 routes sort SUPPORTED HERE / NOT SHOWN HERE and restate one cautious sentence without using “always.”
- Check · 4 min. Ask if two invented pairs can establish what every real paper/plastic does. Child says no and names source limit.
- Exit · 2 min. Keep exact child correction; never turn E's fake caption into actual feedback.