Disquisition on Permissible Literality

The Disquisition on Permissible Literality is a doctrinal instrument of forty-seven clauses, composed by Scribe Alara over the winters of 1,406 and 1,407 and regarded by most recensions as the founding text of the School of Literal Coherence. Its central rule — that a catalogue entry shall mean what it says, no more, and no less, and that any further meaning must be separately filed — is reproduced as Clause 1 in every surviving copy. The remaining forty-six clauses are not universally agreed upon, and the text's many lives depend on which forty-six one is holding.

Composition and the Seven Recensions

Scribe Alara composed the Disquisition in the north scriptorium of the floor designated Quill Index (floor 2,613-n), working from a gloss on Disquisition on Primary Sources by Elara of the Seventh Spiral that was already a century old when she took it up. The work was issued in seven recensions between 1,407 and 1,431; the fourth and sixth are partial, the fifth is disputed, and the seventh contains forty-nine clauses, of which two are now generally held by the Bureau of Intra-Textual Relations to have been the marginal comments of an exhausted copyist and not Alara's at all. The Forty-Seventh Concordance did not address this directly, but its Annex 9, which amended the Seven Permissible Syllable Laws, refers in passing to "the forty-seven clauses of the Disquisition" as though the matter were closed. It was not closed, and the marginal clauses remain in circulation under the designation Clause 48 and Clause 49 (Disputed).

The Core Principle and Clause 23

The School's principle is often mistaken for a prohibition on interpretation. It is rather an allocation: interpretation must be entered elsewhere, on its own leaf, and cross-filed to the entry it concerns. Alara is explicit at Clause 23:

"A reader who finds a second meaning in a shelf-mark is not forbidden to keep it. Let him keep it in a dossier, and let the dossier be sealed, and let the seal be recorded. What is forbidden is that the second meaning stand in the entry unmarked, as though the entry had said it."

— Disquisition on Permissible Literality, Clause 23 (fifth recension)

The clause was cited in 1,458 when the Superintendent of Permissible Exceptions was asked to rule on a glazier's complaint that a misleading floor-name had caused him three days' wasted stair-work. The Superintendent's decision — that a name means the floor and not a category of floor — relies almost wholly on Clause 23 and has been reprinted in every edition of the Disquisition since.

Controversy: Permissible Incompleteness

The principal scholarly disagreement concerns the Disquisition's relationship to Permissible Incompleteness. Clause 31 states that "an entry may omit what it cannot verify, and the omission need not be noticed in the entry." The School of Literal Coherence has traditionally read this as a licence for Spatial-Topological Gaps and for similarly sanctioned holes in a description — the position adopted in the commentary tradition initiated by Scribe Alaric, whose own Disquisition on the Vex Cipher & Its Discontents quotes Clause 31 in support of his account of Ledger Beta Permutation Errors.

Against this, the Chronologers' Guild has argued since the early fifteenth century that Alara intended the clause for uncertainty only and never for unfinished work, and that a gap sanctioned under Permissible Incompleteness is a gap of a different order from the omissions Clause 31 describes. The Guild's 1,512 Disquisition, which defined "unhistorical" as a mode of existence orthogonal to sequential chronology, cites the Disquisition on Permissible Literality only once, in a footnote, and that citation has been characterised in the Logistical Mandates as "the thin end of a wedge that should have been left in the drawer." The question has never been put to a full Concordance vote.

The Provisional Shelving Feud

The Disquisition's most consequential afterlife is a matter of filing rather than doctrine. In 1,489 the Order of the Latent Page was chartered to hold leaves that were shelved before their entries were complete, and the charter's framers drew heavily on the Disquisition's distinction between a description and a promise. In 1,506, however, the Order invoked the Disquisition in support of a claim that the Disquisition on Provisional Shelving — a work by one of the Order's own founding members — had been expunged in violation of Clause 42. The claim was heard across four sessions and dismissed on a technicality of seals. The Order maintains the claim; the bureau maintains the dismissal; the two have not sat at the same table since.

Preservation and Custody

Of the surviving witnesses, the most complete is held on floor 907-γ in the Lumina-Candle annex, where the reading room is kept at a fixed six degrees and no open flame is permitted, since the annex's copy is bound in a leather that will not survive a warm room. Readers wishing to consult Clauses 44 through 47 must give a day's notice, because those leaves are stored flat in a separate press.

The Disquisition has never been superseded by any Concordance and is unlikely to be, though the Operational Parameters require every entry in the archive to carry at least one cross-reference, and the Disquisition is the cross-reference most commonly used to satisfy that requirement. It is, in that sense, the most cited document in the Tower and one of the least frequently read.