What remains constant
Preserved evidence
The original participants and pair assignments remain the reference point; the qualifying Phase B evidence stays frozen.
Phase C · Next — not started
Shared-History Change
What happens when the pair stays the same but access to accumulated shared history changes?
Next — not startedWhy this phase follows Generalization
Generalization showed descriptive persistence but could not isolate shared history as its cause. The next scientific step is to vary history access while holding as much else stable as governance permits.
What is intended to change
The next contrast
Access to accumulated shared history is the intended experimental variable.
Design boundary: This is a phase overview, not an authorized protocol. Detailed interventions, assignments, measures, stopping rules, and participant contact remain frozen until prospective governance is complete.