Quentin Skinner's 'mythology of prolepsis' (1969) names the conflation of an action's retrospective significance with the agent's own intended meaning

In "Meaning and Understanding in the History of Ideas" (History and Theory 8, no. 1, 1969, pp. 3–53), the Cambridge historian Quentin Skinner names the mythology of prolepsis: the interpretive error of describing a past work or action in terms of its later, retrospectively-recognized significance in a way that leaves no room for what the agent actually meant to do. The essay's definition turns on an asymmetry — "the significance an observer may justifiably claim to find in a given statement or other action, and the meaning of that action itself" are not the same thing, and prolepsis collapses them.

Skinner's worked example is Petrarch's ascent of Mount Ventoux, sometimes described as the moment "the age of the Renaissance began." No account under that description, he argues, "could ever be a true account of any action Petrarch intended," since there could be no intention "to open the Renaissance": "to give such a description requires concepts which were only available at a later time" (the last clause Skinner's own quotation of Arthur Danto). He offers a diagnostic symptom: prolepsis-governed discussions are open to the criticism levelled at any teleological explanation — "the action has to await the future to await its meaning."

The term matters to this vault because it names, from within the history of political thought and a full generation before the vault's other historiography thread arrives via Butterfield (claim-butterfield-1931-coined-whig-history-as-present-referenced-past), one precise mode of the back-projection error the myth-ledger polices. It is the error-side counterpart to the vault's detection method, the argument from silence (moc-argument-from-silence): where the argument from silence is how a misattribution gets caught, prolepsis is a name for the mistake being made. This "Skinner" is not B. F. Skinner, the behaviorist psychologist, whose unrelated Contingencies of Reinforcement appeared the same year, 1969 — a shared surname and publication year, nothing more. Prolepsis names only one mode of the vault's back-projection pattern; the term-crediting mode Skinner files separately under the "mythology of doctrines" (claim-skinner-1969-names-four-mythologies-doctrines-coherence-prolepsis-parochialism, claim-skinner-prolepsis-and-doctrines-name-two-modes-of-the-vaults-back-projection-pattern).