One Thousand and One Conjectures

Which Shahnama episodes got painted is normally explained by narrative salience and patron taste. In commercial production the causality should often run the other way: painting spaces were reserved at ruling time, spread across the planned quires so a buyer flipping the…

Bestiary images descend copy by copy, but the copyist's eye corrects toward nature only where nature is available: a fox or hedgehog is re-anchored by daily perception, while a crocodile, whale, or bonnacon is pure graphic descent with no external referent. Iconographic…

Pattern sheets travelled as outline drawings with colour given verbally — the Göttingen Model Book literally writes out its recipes — while copying from a finished exemplar transmits paint by eye but forces a freehand redraw. Two transmission channels, opposite bandwidths: model-book…

Chrysography and gold-leaf image grounds drew on the same budget line, the same material stock, and the same specialist hours, and they address different audiences — the reader and the beholder. The naive luxury model says richer books have more of both;…

Byzantine book epigrams praising gold letters, silver covers, and purple leaves are conventionally read as rhetorical topoi. But the verses were commissioned as part of the same donation package as the decoration, and a donor recording a gift before God has audit…

Al-Sufi's Book of Fixed Stars transmits each constellation in two mirror parities — as seen in the sky and as on the celestial globe — and copies differ in how the pairing survives. Painters copy their exemplar's pictures, so parity should be…

Insular interlace obeys strict under-over alternation, and its rare violations are treated as random lapses. The conjecture: the slips are structural — they concentrate where the drawing process broke off, at panel joins, pigment-field boundaries, and day-work seams — so error positions…

Ornament in stained glass — border types, diaper grounds, grisaille foliage — is studied inside glass scholarship, but glaziers stocked their cartoon chests from painters' books. Ornament families should therefore appear in dated manuscripts before dated glass of the same region, with…

The deluxe illuminated copy and the textually best copy of a work are systematically different books: illumination routes production through commercial ateliers optimizing appearance, schedule, and a lay patron's ear — smoothing hard readings as they go — while plain copies made…

Bas-de-page drolleries look like free invention scattered at whim, but the planner's and patron's attention concentrated at the liturgical divisions, where the opening had to perform. If marginal invention is budgeted attention rather than a programme, drollery density and inventiveness should decay…

When western Indian manuscript production moved from palm leaf to paper, pages kept palm-leaf proportions and painted vestigial string-hole medallions — that much is known. The unestablished structure is the shedding schedule: vestiges should die in a fixed order, the functional trace…

Whether Maya codex production divided glyphic and pictorial labour is unresolved. The conjecture: it did not — each glyphically identified scribal hand painted its own deity images, so a hand's iconographic micro-habits (the drawing of God B's eye, ear-ornament forms, foot rendering)…

The great Old French epic cycles — the dozens of chansons de geste about Guillaume d'Orange or the rebellious barons that circulate welded together in huge thirteenth-century codices — are usually explained as literary projects: poets and compilers deliberately building a saga.…

The German Minnesang anthologies, most famously the Codex Manesse, arrange the love poets by social rank — emperor first, then kings, dukes, counts, knights, commoners. Many individual stanzas are attributed to different poets in different manuscripts, and this conjecture claims those disputes…

The oldest scraps of written vernacular lyric in the medieval West — Old High German charms and love-lines, early Romance snatches, the odd English couplet — turn up disproportionately as marginal and flyleaf additions. This conjecture specifies where: in grammar books (Priscian,…

Exempla — the short illustrative tales preachers dropped into sermons — were collected first by monks (Caesarius of Heisterbach's leisurely dialogues) and then, in the thirteenth century, by friars in alphabetized handbooks. This conjecture quantifies a selection pressure: mendicant collections cut median…

The great Eastern frame-tale collections — Kalila and Dimna, the Seven Sages, Barlaam and Josaphat — reached Europe through chains of translation: Arabic to Hebrew or Greek, then to Latin, then to the vernaculars. This conjecture claims each border crossing planed off…

Byzantine men of letters left two great paper trails: orations, the public speeches that made reputations, and letters, the private notes that maintained friendships. This conjecture claims the two genres travelled through the manuscript tradition in opposite vehicles: orations moved as singles…

Byzantine scribes closed their books with verse colophons — little poems in which the copyist compares himself to a sailor reaching port, begs prayers, and sometimes hints at payment and exhaustion. This conjecture ties the tone of the epigram to the economics…

Many Byzantine book epigrams name a specific person — the scribe John, the patron Theodora — and instinct says a named, personal poem is a one-off, while an anonymous formula is the reusable one. This conjecture inverts that: epigram types built around…

Byzantium produced a large literature of anti-Latin polemic — treatises on the errors of the Franks, the azymes, the filioque. Instinct says such writing surges when Latins do their worst, above all after the sack of Constantinople in 1204. This conjecture says…

Iceland wrote two great saga genres: the sober family sagas, dense with genealogy and land boundaries, and the legendary fornaldarsogur, full of dragons, berserks, and ancient kings. This conjecture links their relative copying rates to the legal value of memory: the family…

Thousands of Middle English lyrics survive in one manuscript only, while a few circulate widely, and beauty does not predict which. This conjecture proposes the engine of lyric survival was reusability in prose: poems containing proverb lines or detachable sententiae were copied…

Late medieval English households kept miscellany books — romances, recipes, bawdy tales, prayers, all sewn together. This conjecture claims those books have a systematic architecture of respectability: the first item is religious at a rate far above the book's overall religious content,…

Irish scribes are beloved for their marginal complaints — cold fingers, bad ink, wandering thoughts. This conjecture claims the grumbles are not evenly sprinkled: they cluster at codicological seams, the points where the scribe changed exemplar, resumed after an interruption, or handed…

The fabliaux — Old French comic tales of adultery and trickery — survive almost entirely in miscellanies, and this conjecture claims their placement inside those books follows a rule: a fabliau is disproportionately shelved next to a didactic or moral item, and…

Northern Italy around 1300 hosted a flourishing industry of Franco-Italian literature — French epics copied, remade, and newly composed in the Veneto for Italian audiences. Within two generations it was dead. This conjecture blames the Commedia: Dante's poem, spreading explosively through the…

The Cantigas de Santa Maria, Alfonso X of Castile's four-hundred-song Marian miracle collection, drew on international miracle books but also on many local Iberian shrines, and the local choices look arbitrary. This conjecture claims they track the king's own itinerary: shrines got…

Some Middle High German romances open by naming the patron who commissioned them; others circulate patronless. This conjecture claims the named patron measurably restricted the text's travels: patron-named romances survive in witnesses spanning fewer dialect regions than anonymous or unpatroned works of…

Medieval schoolboys learned Latin on a fixed menu of texts — Cato's Distichs, Avianus, the Auctores octo — and their copies are choked with interlinear glosses. This conjecture claims the gloss layer was the launchpad of vernacular literature in a measurable way:…

Medieval page layout carried meaning: Latin classics and university texts came in two stately columns, while humbler works ran in single column or long lines. This conjecture claims layout tracked canonization with a measurable lag for vernacular literature: a vernacular work's first-generation…

Everyone assumes old chant is stable and new chant is loose, because errors accumulate with copying. The reverse should hold across medieval Europe: chants for late, centrally promulgated feasts like Corpus Christi (1264) should be nearly identical everywhere, while the ancient Advent…

Every psalm sung in the office ends with a small cadential formula, the differentia, chosen from a local menu; tonaries were written to police that choice. The conjecture is that the menu shrinks on a steady clock: each recopying of an antiphoner…

The Glossa Ordinaria wrapped the Bible in marginal commentary; the postill was a separate, self-standing commentary that flourished from the thirteenth century. The conjecture: the postill genre was born of page geometry, book by book — where the standard Gloss had already…

Some Greek texts were copied because churches were required to have them (liturgy prescribed by the typikon), others because readers admired them (homilies, theology, classics). These are different economies: prescribed books face a demand set by the number of altars — every…

Byzantine scribes framed their books with verse epigrams, most in the strict twelve-syllable line whose prosody every schooled scribe once commanded. The conjecture: when the same epigram type is recopied across centuries, its metrical faults accumulate at a measurable rate, because later…

In Eastern Christian monastic libraries, two genres lived different physical lives: service books were handled daily, worn out, and replaced by fresh local copies, while patristic theology sat on the shelf, consulted but not consumed. The conjecture is that this splits every…

The nomina sacra — the contracted sacred names like a barred theta-sigma for 'God' — are the most distinctive habit of Christian book hands; ordinary papyrus letters and contracts are the humblest layer of ancient writing. The conjecture is that in everyday…

A book of hours contains several components that each betray a local liturgical 'use' — the calendar's feasts, the litany's saints, the office variants. In a bespoke book made where it would be prayed, these parts agree. The conjecture is that internal…

After confession became obligatory in 1215, Europe needed reference books for confessors, and two designs competed: systematic summae organized by theological order, and alphabetical ones organized like dictionaries. The conjecture is that alphabet beat system in the survival record by a wide,…

A thirteenth-century sermon opened with a thema, a scriptural verse chosen from the day's readings, from which the whole discourse was unfolded. In principle a preacher could pick any verse of the pericope; the conjecture is that the market for model sermons…

The earliest medieval annals are laconic year-entries, and many survive physically attached to Easter tables — the computistical grids monks kept for finding the date of the feast. The conjecture makes the attachment causal and testable: annal-keeping began as marginal annotation of…

Gratian's Decretum, the twelfth century's great canon-law textbook, was augmented after its making with inserted passages called paleae; the next century's decretal collections (the Liber Extra) codified the new case law flowing through the papal courts. The conjecture is that the paleae…

Until 1215 the Church banned marriage within seven degrees of kinship; the Fourth Lateran Council cut the ban to four. Old canonical and penitential texts kept being copied after the change. The conjecture is that scribes silently repaired the law in transit:…

The Franciscan Rule was locked into a papal bull in 1223; the Dominican constitutions were deliberately kept amendable by annual general chapters. The conjecture is that these two legal fixation modes produced two opposite textual physiologies, measurable in the manuscripts: the bulled…

Guides written for anchoresses — most famously the Ancrene Wisse, first addressed to three sisters — kept being revised for new readers. The conjecture is a directional law of such revision: addressee scope only ever widens (three sisters, then a larger community,…

Inquisition registers record vernacular testimony in notarial Latin, but the Latin skin tears in predictable places, letting Occitan words through. The conjecture is twofold: the tear-points cluster in domains where Latin genuinely lacked equivalents — kinship terms, foodstuffs, and the heretics' own…

The portable breviary compressed the monastic office into a book a friar could carry, and something had to be cut. The conjecture is that compression was systematically confessional in its priorities: hagiographic lessons (saints' lives read at matins) were slashed first and…

Byzantine book epigrams occur at both ends of a codex: dedication verses up front, scribes' colophon verses at the back. The conjecture is that position governs fidelity: occurrences of a formulaic epigram type at the end of a book should deviate from…

When Rome suppressed Spain's old Hispanic (Mozarabic) rite in the 1080s, its books kept being copied in a few Toledo parishes for centuries — but nobody was learning the chant as a living performance tradition anymore. The conjecture is that suppression changed…