Not a fifth lens, but a note on where these four accounts genuinely pull apart, and where they agree.
The sharpest dispute sits between the scholarly-consensus and revisionist readings of the 1980s–90s. Both agree on the sequence of events — the 1985 Citizenship Act, the 1989 dress-code decree, the expulsion of more than 100,000 people by the mid-1990s. They disagree entirely on what those events were for: consensus historiography treats them as an overreaching but ultimately domestic citizenship dispute, secondary to the treaties and diplomacy that consensus scholars foreground as Bhutan’s real story; revisionist scholarship treats the expulsion as the central, defining act of modern Bhutanese state-building, arguing that a nation “surviving” between empires and a nation defining itself by whom it excludes cannot be treated as two separate stories.
A second genuine divergence concerns the current China boundary talks. Political-cultural scholarship reads Bhutan’s cautious, incremental approach as continuity with its centuries-old habit of legitimizing change slowly and from within; economic-geographic scholarship reads the identical caution as narrower fiscal self-interest, a small hydropower-dependent economy unwilling to risk its principal patron relationship with India by moving too fast on a dispute India also has a direct stake in.
All four lenses agree on one point: Bhutan’s modern sovereignty, unlike Sikkim’s or Tibet’s, has never been formally extinguished, and every account — however differently it explains why — treats that survival as the fact requiring explanation.
Where the four lenses part is not on the record but on where the story’s true weight falls: on the treaties, on the exclusion, on the sangha, or on the ledger.