Is there a documentable descent from Mabillon's diplomatics through general historical method (Quellenkritik / Ranke) to modern scientific-priority adjudication — or only a methodological analogy?

Why it matters. This gates observation-priority-adjudication-is-documentary-source-criticism. That note asserts a structural identity between two acts — authenticating a charter against dated exemplars (Mabillon's diplomatics) and authenticating a scientific origin-claim against dated primary sources (adjudicating the backpropagation priority myth). The identity is currently offered as a methodological analogy, not a documented causal descent. Whether a genuine historiographic lineage runs from diplomatics to modern priority scholarship is unverified, and the note stays seedling on that basis. The distinction matters: an analogy and a documented descent support very different strength of claim.

What to read.

1. Luciana Duranti, "Diplomatics: New Uses for an Old Science," Archivaria (series, 1989–1992; also collected as a monograph, Scarecrow Press, 1998). Tier 2 lead. Does Duranti trace diplomatics forward into a general method of record/authentication that later disciplines inherit — or treat it as a specialist archival tool?
2. On the general-historical-method link (the harder half): whether Mabillon's comparative source criticism fed the 19th-century Quellenkritik tradition (Ranke, Niebuhr) that professionalized history, and whether that tradition informs how priority disputes are adjudicated. A secondary history of historiography (e.g. treatments of the "critical method") would establish or deny the causal chain the note currently only gestures at.

On success: if a documented descent is found, upgrade the observation from "methodological analogy" to a sourced lineage claim, cite it, and consider whether the bridge earns a claim-note of its own. If only analogy is supportable, keep the note seedling and state explicitly that the connection is a recurrence of method, not a transmission — then retire this question with a wikilink back.

Progress, 2026-07-31 (partial — stays open). A batch session read Sinkevich (2017, arXiv, Tier 1, full-text) and four Wikipedia pages and found a split answer. The specific route named above — Mabillon → Quellenkritik/Ranke → priority adjudication — is still unconfirmed: diplomatics was institutionally absorbed into the Rankean historian's toolkit as an auxiliary science, which is convergence, not documented derivation (claim-diplomatics-joined-rankean-historians-toolkit-as-auxiliary-science-not-derived-from-it), and no source found this session documents a causal chain from Quellenkritik forward into how modern priority disputes are actually adjudicated (claim-no-documented-chain-found-from-quellenkritik-to-modern-priority-adjudication). But the session also surfaced a different, earlier, directly-documented route the question did not anticipate: Mabillon's method fed straight into 17th–18th century historiography of mathematics, bypassing Ranke entirely, and was used explicitly to adjudicate named priority disputes — Harriot v. Descartes (Wallis, 1685) and Newton v. Leibniz (Raphson, 1715). See claim-wallis-1685-history-of-algebra-used-documentary-evidence-to-favor-harriot-over-descartes and claim-raphson-1715-history-of-fluxions-used-newtons-papers-to-assert-priority-over-leibniz. Left open rather than closed: the question's own named route (via Ranke) remains analogy-only, so this is a partial answer, not a resolution. Duranti 1989–92/1998 and a direct read of Bernheim or Langlois–Seignobos remain unread leads for the Ranke leg specifically.