Specular Records

Specular Records is the collective designation for the non-redundant catalogue of every mirror, reflective surface, and optical interface documented within the Tower. The Records are maintained under the authority of the Department of Specular Integrity, a sub-order of the Librarians administering Floor 719, and constitute the only register in the archive in which a surface is entered exactly once and never re-entered under a variant name. This principle, called the Rule of Single Incidence, was established by the Third Concordance and is the reason the Records are consulted at all: where the general catalogues duplicate, conflate, and quarrel, the Specular Records are expected to answer plainly how many mirrors there are and where each of them stands.

They do not, in practice, always answer plainly, a matter taken up below.

Scope and method

An interface enters the Specular Records when it returns an image of sufficient resolution to be recognised as an image by an observer of ordinary competence. Surfaces that return no image — including matte finishes, unpolished stone, and the greater part of the Tower's flooring — are excluded by definition. The single documented exception is the Alpha Ingress, the 10-centimetre aperture in the otherwise non-reflective surface of Desk Alpha, which is entered in the Records despite functioning as an optical instrument rather than a true reflector. The Department maintains that the Ingress "is recorded because it reflects, and the desk is recorded because it does not" (Departmental Memorandum 719-41).

Each entry carries a floor number, a description of the surface, its dimensions, the date of first registration, and a liability class assigned under the doctrine of Reflective Liability. Entries are written in the Department's own hand and are not open to amendment by clerks of other floors. Referential Consultation of the Records requires a written request and, since Cycle 8,430, the surrender of the requester's writing implements at the desk.

The Nullifier question

No entry in the Specular Records has drawn more commentary than the surface formally designated a Specular Nullifier and catalogued under Item 7-Ψ/14α, widely known as the Mirror That Reflected Nothing. Its inclusion is owed to the compromise brokered by the Custodian of the Stacks, which permitted the object to be entered in the Records while recording that no image had ever been observed in it. The compromise satisfied both parties at the time and has been contested at intervals ever since.

The dispute turns on whether the Records are a register of surfaces or a register of reflections. The Third Concordance, Annex 4, holds the former:

"A thing is specular if it is capable of reflecting; whether it reflects at any given hour is a matter for the observer and not for the register."

— Third Concordance, Annex 4

The Concordance of Audible Records, in a marginal recension of disputed authority, holds the latter, and the School of Literal Resonance has argued in three separate petitions that a surface reflecting nothing is, in the strict sense, a surface, and therefore not the Records' business. The petitions were received and are held under seal at the Bureau of Petitionary Records (Model IV).

Floor 719 and the incident of Cycle 8,422

The Records are kept on Floor 719 in a chamber whose mirrors are themselves the last entries in the volume. The Shattered Mirror Incident of Cycle 8,422 occurred when a poorly contained specular ledger was carried through the chamber and caused the temporary duplication of all catalogue cards in Aisles 100-117 on Floor -204. The Department's response was not to repair the ledger but to reinforce the Rule of Single Incidence, a decision recorded in the Third Concordance as the founding of Reflective Liability. Duplicates produced thereafter are treated not as errors but as liabilities, and are reconciled under Archival Reconciliation rather than struck.

A second incident, the Apparent Duplication Event (ADE) of Cycle 8,455, is often attributed to the Records and is not. The Department has asked that this be stated in every article touching the subject.

Points of scholarly disagreement

The number of entries in the Specular Records is given as 14,310 by the Department's own running count, 14,301 by the Office of Substrate Records — which maintains that nine of the entries describe the same interface seen from different floors — and "fourteen thousand and some" in the survey published by the Vault of Ambiguous Records, whose recension is lodged on Floor 14,301 and is not considered authoritative by anyone. The Aris Thorn Discrepancy is the most carefully studied of the contested entries.

Access and known gaps

The Records may be consulted by any Librarian in good standing on written application. Surfaces on Floors below the water line are entered from testimony rather than inspection, as the Department's inspectors will not go down past the ninth landing. Temporal Gaps in the register between Cycles 7,904 and 7,918 have never been explained and are marked in the margin with a single upright stroke. Visitors are asked not to look directly into Item 7-Ψ/14α while the volume is open, as the page is difficult to turn afterward.