Prepared as a scientific-analytical essay on the relationship between thought, consultation, practical testing, institutional learning and the transfer of experience across different periods of Iranian history. Methodological note: this article does not claim to offer an exact numerical measurement. It uses a transparent qualitative scale to compare historical periods according to institutional and intellectual evidence. The complete English essay is available below, including its historical comparison table, nine period-by-period analyses, proposed model for national rationality, conclusion and ten selected reference entries.