Queue Echoes

Queue Echoes are the residual audible traces left by a person who has stood in a Tower queue and departed before reaching its head. They are catalogued as a distinct phenomenon from ordinary Echoes in West Spiral 44 because they do not reproduce a sound that was made; they reproduce a sound that was withheld. A Queue Echo typically takes the form of a sigh, a shift of weight, or the phrase "no, after you," repeated at intervals determined by the original wait and audible only to persons presently queuing on the same landing.

The phenomenon is administered jointly by the Bureau of Queue Management and the Register of Echoes, an arrangement that has produced four hundred years of jurisdictional correspondence and no settled procedure.

Mechanism and Measurement

Scriveners of the Register record Queue Echoes against the interval between a subject's arrival and their departure, a figure known as the residual term. A residual term under forty minutes produces what the Register calls a "thin" echo — audible only in silence, and easily mistaken for the building. Terms above six hours produce echoes that continue for years and, in three documented cases on the North Aperture stair, have begun to queue.

In 941 the Static Congestion Model of Queue Formation was extended to cover echo accumulation, on the reasoning that a queue which has stopped moving does not cease to produce the sounds of waiting. The extension was contested by the Priority-by-Obscurity school, which argued that a stalled queue generates echoes of diminishing obscurity and therefore resolves itself; the dispute was referred to the Seventy-Fourth Concordance, which had already assigned the question elsewhere.

"An echo shall be counted where it is heard, and taxed where it is filed, and these shall not be held to be the same floor."

— Concordance 74, Annex 11, clause 4

The Hall of Whispering Margins Incident

The largest recorded concentration of Queue Echoes occurred in the Hall of Whispering Margins during the winter of 1102, when a procedural delay in the adjudication queue left four hundred and six petitioners waiting eleven days without being seen. All four hundred and six eventually departed. Over the following season the Hall accumulated what the Register terms a full chorus: a continuous, low, overlapping murmur of departed petitioners, so dense that new arrivals assumed it was the Librarians deliberating behind the doors and waited politely to be called.

The Priority-by-Obscurity Model of Queue Formation had been in force in the Hall since 1088 and, its defenders note, was working exactly as intended — the queue had not grown, because the queue consisted largely of people who were no longer there. The Hall's prefect, Under-Prefect Calla Vess, filed a complaint against the Register of Echoes for maintaining a competing queue within her jurisdiction. Her grievance survives in the record and runs to nine pages, of which seven concern the noise.

Disagreement Among the Concordances

Scholars remain divided on whether a Queue Echo constitutes an echo at all. The Bureau of Queue Management holds, citing Concordance 74, that the phenomenon is a queue matter and falls under its jurisdiction over Queue Formation in the Central Index. The Chamber of Receding Echoes holds, citing Concordance 112 and the Third Concordance in the alternative, that anything audible at a distance is an echo and belongs to the echo chambers.

The contradiction is not incidental. A Queue Echo that is classified as a queue must be resolved, and resolution requires identifying the person who left it; a Queue Echo classified as an echo need only be filed. Since 1104 the Pending Resolution Vault has held 2,817 Queue Echoes awaiting identification, of which 2,815 have been auditioned and none matched to a living petitioner.

Notable Cases

The oldest uncontested Queue Echo is the so-called Sigh of the Ninth Landing, first noted in 604 and audible on most mornings between the third and fifth bell. It is attributed to an unidentified petitioner in a green coat. Four different clerks have claimed the green coat over the centuries, and the Register keeps all four claims open.

The Cabinet of Echoes holds 88 sealed vessels of Queue Echoes gathered from procedural queues between 1170 and 1233. The vessels are not to be opened indoors. Visitors to the Cabinet are asked to leave their coats with the attendant, and to speak only when spoken to, so that the holdings are not confused with the visitor.

Practical Guidance

Persons joining a queue in which Queue Echoes are known to be present are advised to state their business aloud upon arrival, so that the Register has a voice to compare against later. The Month of Lingering Echoes is exempt from all echo filing, a privilege granted in 1198 and never rescinded, and no Queue Echo taken during that month is admissible in any adjudication.

Departing a queue early is not prohibited. It is, however, recorded, and the recording is audible.