Goal: distinguish two comparable actual records from a universal law, and record inconsistent or non-discernible responses honestly. Proposed codes: AC9SFU03, AC9SFI03, AC9SFI04. Prepare: any approved actual A/B records, Model L, Card 78.
- Record gate · 3 min. Check actual dates, materials, support, action and access. If pairs are incomplete/different, mark INCOMPARABLE; no new sound required.
- Read · 4 min. Adult reads exact A/B responses, including NOT DISCERNIBLE or NOT TESTED. Paper L remains diagram-only.
- Model · 5 min. Teacher says “These records describe two actions here; they do not prove every layered card is quieter.” Compare prediction with later actual observation only if both exist in order.
- Child try · 7 min. Card 78 routes make a same/different/unclear comparison and name one changed condition and one limit; use attributed adult reports appropriately.
- Check · 4 min. Offer “No sound heard means no effect happened.” Child says observer may not discern a response; do not infer physical absence.
- Exit · 2 min. Save one bounded claim or reason evidence is insufficient.