What Would Need to Be True
Empirical research that tests realistic-thinking specifically against pure-positive thinking on strategic-decision quality outcomes (not on subjective well-being).
Domain-specific calibration: does the optimal register vary by context? Sales and creative work may favor positive-affect register; strategic decision-making may favor realistic-thinking register.
Reconciliation test: does Pillai's realistic-thinking practitioner display elevated positive affect as a side-effect of operational success, even though the cognitive register is not positive-thinking?