One Thousand and One Conjectures

An incipit — the opening words by which a medieval text was cited, catalogued, and sold — behaves like a fossilizing tag, but not all genres fossilize at the same rate. The surprising connection is that astronomical incipits mutate far more slowly…

The great medical handbooks were repeatedly abridged into epitomes, and the epitomes were then stuffed with new matter — this much is familiar. The surprising connection is that the process is a regular two-phase pulse with a stable ratio: first-generation epitomes cut…

Middle English medical writing is routinely described as translated 'from the Latin tradition', as if the whole Latin corpus fed it. The surprising connection is that the vernacular tapped almost exclusively the short-text layer — epitomes, compendia, and extracts — rather than…

The standard picture has Hindu-Arabic numerals entering Latin Europe through algorism treatises — books that explain the new arithmetic. The surprising connection is that the zero sign appears earlier and more consistently in Latin astronomical TABLES than in Latin arithmetical texts: the…

Mappae mundi look like pictures copied from pictures, and their genealogies are usually drawn accordingly. The surprising connection is that their place-name errors are textual, not graphic: omissions cluster in runs of names that are adjacent in written geographies but scattered on…

Copyists of world maps worked outward from the ideologically loaded centre, and their attention decayed with radius. The surprising connection is that copying fidelity on mappae mundi is therefore a radial function: error and omission density rises with distance from the map's…

Medieval sundials carry engraved hour-lines and hour labels, and computus manuals — the church's timekeeping textbooks — supplied the vocabulary. The surprising connection is that dial epigraphy tracks textbook succession: when a new computus text achieves dominance in a region's schools, the…

Pharmacological recipe collections grew by accretion as owners added what they acquired — this is agreed. The surprising connection is positional: the shared ancestral core of a collection sits at the HEAD, while witness-specific additions cluster at the tail and margins, because…

Translation between the scientific languages was not one flow but a ladder of genre-specific speeds. The surprising connection is the ordering: calendrical and computus material crossed a language frontier within roughly a generation, practical table canons within about two, and theoretical astronomy…

A mappa mundi has two inheritable layers: the drawn and written content, and the construction geometry laid down before any ink — compass-hole centres, ruled circles, division angles. The surprising connection is that these layers travel separately: physical workshop templates passed between…

Some scientific content circulated in both prose and mnemonic verse — versified computus, versified algorism, versified regimen. The surprising connection is that the verse versions systematically out-diffused their prose sources into regions of thin book culture, so the verse-to-prose witness ratio of…

Medieval books were sold, shelved, inventoried, and censored by their first lines. The surprising connection is that alchemical texts exploited this: they circulated under medical-looking incipits — openings promising waters, oils, and the conservation of the body — at rates far exceeding…

The uroscopy wheel — the circular diagram of graded flask colors that is medieval medicine's most recognizable image — normally appears embedded in a treatise, and editors assume image and text descended together. The surprising connection is that the wheel travels on…