Tier-2 Selective Transfer Diagnostic — Encoding Artifact vs Hierarchy Stratification
Central question: Does V2×V4 failure persist after encoding-invariant normalization? If yes → Selective Transfer Theorem. If no → Scale drift artifact.
Decision Rule (preregistered): Declare A (Encoding Artifact) if: Run B (normalized) meets passFraction at R1=0.70 for all previously failing gates, AND the R1 sweep shows normalized retention curves align with stable families. Declare B (Selective Transfer) if: V2×V4 still fails at R1=0.70 after normalization (B1), OR has systematically steeper retention erosion slope than stable families (B2). Either condition sufficient.