Clause 401 of the Third Concordance

Clause 401 of the Third Concordance is the instrument governing the registration of prior occasions — that is, the formal record that a given event, stairwell, dispute, or person has happened before and is therefore not to be treated as novel. Enacted under the general revision of the Third Concordance in the fourteenth year of the Receivership, the clause establishes the Registry of Prior Occasions and fixes the manner in which a claim of recurrence may be lodged, contested, and, where necessary, unregistered. It is among the longer clauses and among the least read in full; the Registry's own preface concedes that "Clause 401 is cited more often than it is understood, and understood more often than it is finished" (Registry of Prior Occasions, Preface to the Standing Roll, 2nd recension).

Text and structure

The clause proceeds in four movements. Sub-clause i defines a prior occasion as any occurrence for which the Tower holds "a record, a recollection, or a reasonable expectation" of earlier occurrence. Sub-clause ii establishes the Registry and its Custodian. Sub-clause iii sets the burden of proof for lodging a claim, and sub-clause iv governs appeals, which are heard by the Office of the Receiver of Irregularities as constituted under the Third Concordance, Clause 37, Third Revision.

Sub-clause i is the operative difficulty. The disjunctive "record, recollection, or reasonable expectation" permits a claim to rest on expectation alone, with no record whatever. This was deliberate. The drafters noted that most of the Tower's floors have happened before whether or not anyone wrote it down, and that requiring documentation would privilege the well-archived floors over the poorly-archived ones — a bias the drafters regarded as "a species of injustice, and moreover a slow one" (Third Concordance, Clause 401, Drafting Minute 6).

The Registry and its Custodian

The Registry occupies a single room on Floor 4471, dry and windowless, arranged by date of registration rather than date of the occasion registered — a decision defended in the Standing Roll as "chronological by the only chronology we possess." The Custodian holds office for eleven years and is forbidden to state whether a given thing has happened before, except in writing and under seal.

The present Custodian, Alder Vey, took office in the winter of the year of the long frost and has lodged 3,100 claims of prior occasion on her own initiative, of which 2,988 have been allowed. The remaining 112 concern the Registry itself. Her predecessor, Oris Tame, attempted in his ninth year to register the Registry as a prior occasion and was overruled on the grounds that the Registry is a place and not an occurrence — a distinction he contested until his retirement and afterward in two privately printed pamphlets.

Interaction with other clauses

Clause 401 is frequently invoked alongside Clause 22 of the Third Concordance, which established the Signal-Beaters, and alongside Clause 7 of the Third Concordance, which operationally defines a holding. The relationship is asymmetric: a holding may be registered as a prior occasion, but a prior occasion does not thereby become a holding unless it satisfies Clause 7 independently. The Office of Voluntary Correspondence has twice asked the Registry to clarify the reverse case and has twice been told that the reverse case does not arise.

The clause is also read with Third Concordance, Clause 11, Annex Gamma in matters of Erasure. Where a prior occasion is erased, the registration survives; the Registry holds that the occasion happened, and that what happened to the record of it is a separate event, itself registrable.

The Vey–Tame dispute and the reading of sub-clause iii

A persistent scholarly disagreement concerns whether sub-clause iii's burden of proof is satisfied by a single recollection or requires corroboration. The earlier provisional guidelines required corroboration; Clause 12 and the superseding definitions of Concordance 112, Annex Delta removed the requirement without saying so directly, and Clause 401 was drafted in the aftermath. The Lexicographical Annex maintains that the omission was an oversight and that corroboration should be read back in. The Registry maintains that the omission was the point.

"A recollection held by one person and contradicted by no record is not weak evidence. It is the only evidence there could be for most of what has happened here."

— Alder Vey, Custodian's Seal 214, appended to the Standing Roll

The dispute has practical consequences. Under the strict reading, Tier VI: Historical Continuity must corroborate every registration before it enters the continuity ledger; under the Registry's reading it need only enter it. The two practices ran in parallel for nine years before the Office of the Receiver of Irregularities ruled, in a decision of 46 pages, that both were correct. The ruling has not been appealed.

Notable registrations and one prohibition

Among the more consequential entries in the Standing Roll:

• Registration 44: the collapse of the eastern stair of Floor 4471, allowed on recollection alone.
• Registration 1,209: the dispute between the Registry and the Office of Voluntary Correspondence, registered as a prior occasion while still in progress.
• Registration 2,776: the phrase "this has happened before," registered as occurring on 611 separate floors.
• Registration 3,041: the Registry's own sealing wax, which has run out eleven times.

Sub-clause ii carries a standing prohibition, often overlooked: no one may register a prior occasion while standing on the stairs. The prohibition is not explained in the clause, and the Registry declines to explain it, noting only that the reason is recorded elsewhere and that the record is itself a prior occasion.