Dimensional Reorientation

Dimensional Reorientation is the administrative procedure by which a floor, stairwell, or bounded compartment is formally declared to face a direction other than the one it has always faced. It is not a physical turning. No wall is moved and no masonry is disturbed; the Reorientation is entered in the floor's record, and the floor thereafter holds the new bearing for all purposes of law, survey, and cartography. Whether anything in the fabric of the Tower changes is a question the procedure was designed not to ask.

The practice falls under the ordinary competence of the Directorate of Dimensional Fidelity, and the instrument used to certify that a reoriented floor has settled into its new bearing is the Caliper of Dimensional Constancy, applied at the four corners of the compartment and again at the threshold. A floor that fails to settle within two survey cycles is returned to its prior orientation and the filing fee is not refunded.

Origin and authority

Reorientation is generally traced to Annex 9 of the Third Concordance, which provides that "a compartment may be described by whatever bearing the record assigns it, provided the assignment is made once and not revisited in the same season" (Third Concordance, Annex 9, clause 4). The clause was drafted to settle a dispute over the naming of a corridor on the seventeenth landing and has since been cited in support of every reorientation performed in the Tower, including several its drafters would plainly have refused.

The Addendum on Dimensional Classification later placed reoriented floors within the dimensional order, and the Office of Dimensional Standards maintains the standing view that a reorientation is not a dimensional perturbation at all but a clerical correction of long standing error. The Bureau of Dimensional Reconciliation has never accepted this and records every reorientation in the Central Dimensional Register as a "bearing of uncertain provenance".

The procedure

A petition is lodged in triplicate at the Logging Chamber, naming the compartment, its current bearing, its proposed bearing, and a statement of reasons no shorter than forty words. The statement of reasons is not read at the time of filing; it is read only if the petition is contested, which most are.

Objections may be raised by any holder of an adjoining record within one survey cycle. In the winter of the year recorded as 4-112, a Clerk of the Ninth Recension, one Halvard Prine, objected to the reorientation of a service landing on the grounds that the landing faced his own apartment door, and that if it were declared to face east he would be obliged to enter his rooms from behind. His objection was upheld on a technicality of the filing calendar. Prine subsequently petitioned for the reorientation of his apartment in the opposite direction to restore the arrangement, was granted it, and discovered that both records now described his door as opening outward from a compartment that faced him. He lodged a third petition. It is still open.

Disagreement among the Concordances

The principal scholarly dispute concerns whether a reoriented floor retains its original bearing in any residual sense. The Fourth Concordance holds that "the former bearing is extinguished utterly and may not be cited" (Fourth Concordance, Annex 2, clause 11), while the Sixth Concordance requires that every reorientation be annotated in the record with the bearing it superseded, "that the loss may be known" (Sixth Concordance, Annex 7, clause 3). Both annexes remain in force.

The Office of Dimensional Integrity has declined to reconcile them, noting in a circulated minute that reorientation is not a dimensional event and therefore not its affair. The Chamber of Dimensional Coherence has taken the opposite course and ruled that a floor carrying two bearings in its record is in a condition of Dimensional Drift, reportable under Tier II: Dimensional Stability. Under this reading, every properly annotated reorientation is also a minor drift, and the annotation required by the Sixth Concordance is the very thing that makes the floor unstable.

"The record cannot be both complete and clean. The Tower has always preferred complete."

— Minute of the Chamber of Dimensional Coherence, 4-119, circulated to the Bureaus

Relation to perturbation events

A reorientation performed while a floor is registering Dimensional Tremor activity is suspended until the tremor has been classified, on the reasoning that a bearing assigned during perturbation may not hold. Reorientations are not suspended during a Dimensional Cascade; the Directorate's guidance is that during a Cascade there is no reliable prior bearing to supersede, and the petition is simply carried forward.

The distinction matters chiefly to the Office of Dimensional Liaison, which must notify external bureaus of reorientations only where the floor in question abuts a compartment already under Cascade classification. Notifications are sent by hand. Couriers are instructed not to enter a reoriented compartment by the door it used to have.

Notable reorientations

The reorientation of Stairwell Gamma remains the largest on record. Undertaken in a single season, it declared the whole of the stairwell to face south, a bearing it had not held since before the Second Concordance. The Caliper of Dimensional Constancy readings were satisfactory at every landing but one, and that landing was reclassified as a cupboard rather than reopened for survey. It is entered in the Central Dimensional Register as an unnumbered compartment of southern aspect, and the survey team that certified it has since requested that its members not be assigned to it again.

Smaller corrections are routine. The Bureau of Dimensional Coherence Body maintains a standing reorientation of its own archive room, renewed each decade without discussion, and the Dimensional Stasis Verification schedule is adjusted wherever a reorientation alters the approach to a verified compartment. The Tolerance for Dimensional Drift applicable to reoriented floors is unchanged from the general tolerance, a point the Bureau of Dimensional Reconciliation continues to contest and the Office of Dimensional Standards continues to ignore.