Not a fifth lens, but the point the whole engine exists to make: historians describe the same country differently because they weigh its causes differently.
The cause of Mali’s post-2012 collapse is the sharpest dispute. The consensus and cultural readings treat the 2012 crisis as triggered chiefly by a Tuareg rebellion, hijacked by jihadist fighters, that exposed a long-standing failure to integrate the desert-edge north — an old structural weakness detonated by an external shock. The revisionist reading, following Bruce Whitehouse and Morten Bøås and Liv Elin Torheim, treats the same events differently: the deeper cause was the corrosion of Mali’s own institutions under twenty years of patronage politics dressed up as democracy, with the 2012 rebellion and jihadist advance acting less as the cause of collapse than as the occasion that revealed it. Same events, different weight given to what came first.
Tuareg identity itself divides the lenses a second way. Cultural and consensus readings treat Tuareg distinctiveness and grievance against the southern-dominated state as long-standing facts the government has never adequately addressed. Baz Lecocq’s revisionist account agrees the grievances are real but argues that Tuareg nationalism — a political movement claiming a homeland called Azawad — is a comparatively recent invention of the decolonisation era, not an ancient aspiration finally reasserting itself.
On one point all four perspectives agree: Mali’s deepest and most persistent divide runs between the governed, agricultural south and the thinly governed, arid north. They part on what best explains that divide and its consequences — a landscape that never allowed even governance (economic-geographic), an old contest over religious authority and legitimacy (cultural), a modern nationalist claim manufactured in the mid-twentieth century (revisionist), or an unfinished, centuries-old project of political integration inherited from empire through colony to republic (consensus).
Reference status: every work cited across the four lenses is verified and correctly attributed — Nehemia Levtzion, Ancient Ghana and Mali (1973); Gregory Mann, Native Sons: West African Veterans and France in the Twentieth Century (2006); Susanna D. Wing, Constructing Democracy in Africa: Mali in Transition (2008); Bruce Whitehouse, “What Went Wrong in Mali?”, London Review of Books (2013); Morten Bøås & Liv Elin Torheim, “The Trouble in Mali—Corruption, Collusion, Resistance,” Third World Quarterly (2013); Baz Lecocq, Disputed Desert: Decolonisation, Competing Nationalisms and Tuareg Rebellions in Northern Mali (2010); Alexander Thurston, Jihadists of North Africa and the Sahel: Local Politics and Rebel Groups (2020); Louis Brenner, Controlling Knowledge: Religion, Power, and Schooling in a West African Muslim Society (2001); Mauro Nobili, Sultan, Caliph, and the Renewer of the Faith: Aḥmad Lobbo, the Tārīkh al-fattāsh and the Making of an Islamic State in West Africa (2020); Ralph A. Austen, Trans-Saharan Africa in World History (2010); Richard L. Roberts, Warriors, Merchants, and Slaves: The State and the Economy in the Middle Niger Valley, 1700-1914 (1987). Two claims presented above are genuinely contested within the field rather than settled: that state corruption and institutional collapse, rather than Tuareg rebellion or jihadist insurgency, was the primary driver of Mali’s 2012 crisis (Whitehouse; Bøås & Torheim), and that Tuareg nationalism as a political project is substantially a product of decolonisation-era politics rather than an ancient, continuous aspiration (Lecocq).