Empirical Transit Logging

Definition

Empirical Transit Logging is a classification of registry entry concerned with the movement of catalogued subjects between floors, recorded under the authority of the Transit Gendarmerie and entered into the Transit Manifest. It occupies the procedural ground between Ingress Logging and Final Logging, and is distinguished from both by its insistence that a subject is not merely arrived but observed to arrive — a distinction the Provisional Logging Protocol has spent four amendments trying to abolish. The practice is empirical in the specific sense intended by the Empirical Archivists' League: a transit entry is valid only where the observing clerk can state what was seen, when it was seen, and by what means the seeing was confirmed. Unobserved transits are recorded as gaps, not as absences. This principle was inherited from the League's Empirical Protocols and has survived every attempt at revision, largely because no one has yet determined how to strike it from the record without also striking the record itself.

Origins

The earliest transit entries predate the formal practice by some margin. The stairwell registers maintained on the mid-floors during the winter of the Long Recension contain marginal notes of the form "three crates, direction uncertain, clerk L." — unsigned, undated by any concordance, and nonetheless accepted by later archivists as genuine transit records. When the Empirical Archivists' League was chartered, it inherited these notes and attempted to regularise them. The result was the first Empirical Transit schedule, a table of acceptable observation distances, lighting conditions, and permitted instruments. The League's standards were famously exacting. Under the original schedule, a clerk could not record a transit unless the subject remained in view for the entirety of its crossing and the clerk could afterwards sketch the subject's outline from memory within a tolerance of one-fifth. The sketch requirement was quietly dropped after the Acoustic Dissolution Incident, when three clerks assigned to the same crossing produced mutually exclusive outlines and all three were upheld.

Procedure

A transit entry is initiated at the point of departure and confirmed at the point of arrival, with both observations entered into the Registry Logging sequence in the order in which they occurred. The departure observation is itself an act of Ingress Logging — the subject enters the transit register — while the arrival observation is treated as a species of Amendment Logging in that it modifies the standing entry rather than creating a new one. This dual character has been the source of persistent administrative difficulty, since the two halves of a single transit are governed by different sections of the Provisional Logging Protocol and are filed under different annex numbers. Where a transit crosses more than three floors, the observing clerk must hand the entry to a second clerk at a sanctioned Logging Chamber, in a procedure known as the relay. The relay is not optional. A relay conducted on an unsanctioned landing is void, and the subject is deemed to have remained on the floor where the first clerk last saw it, regardless of where it is subsequently found. The Bureau of Auditory Logging maintains a parallel and much smaller register for transits heard but not seen — footfalls, the drag of a crate, a door closing several floors below. These entries carry the notation au. and are never treated as evidence of movement, only of the movement's possibility.

Disputes

The Third Concordance and the Eleventh Concordance contradict one another directly on the question of whether an unobserved crossing counts as a transit at all. The Third is categorical:

"A subject not seen to move did not move, for the purposes of the register."

— Third Concordance, Annex 7

The Eleventh, drafted some centuries later by a committee whose minutes survive only as a summary of its disagreements, provides that "movement is a property of the subject, not of the observer." The School of Empirical Harmonization has argued for four generations that both statements can be reconciled if one treats the register as a record of reportable rather than actual movement, an interpretation rejected by the Empiricist League as "an upgrade of the clerk over the crate." A standing rule holds that no transit entry may be amended after the subject to which it refers has completed a second transit. The rule exists to prevent the retrospective rearrangement of routes, and is enforced by the Transit Gendarmerie with a thoroughness out of proportion to its stated importance. Visitors are reminded that the western stairwell between the mid-floors is closed on the first cold morning of each winter for reasons the maintenance roll does not record.