Register of Probable Holdings

“If a thing does not exist, but may, it belongs here. If it does not exist, and cannot, it still belongs here, but under a separate subheading.” — Preface to the Register’s 42nd Revision.

The Register of Probable Holdings is the primary procedural instrument of the School of Latent Precedence, cataloguing subjects, objects, and phenomena that possess a quantified likelihood of future inclusion in the Tower’s corporeal archives. It is maintained on Floor 117, “The Anteroom”, and its updates are governed by Precedence Assignments ratified by the Office of Ontic Verification. The Register does not document that which is, but that which could be, given sufficient ontological pressure or administrative foresight.

Structure and Entries

Each entry in the Register follows a standardized template: a Provisional Designation (e.g., Phantom-Gamma/117.44), a Likelihood Coefficient (expressed as a percentage derived from Curatorial precedent clusters), a Provisional Floor Assignment, and a list of Cross-Referenced Antecedents. For example, the entry for “A Bell That Rings Only For Echoes” carries a Likelihood Coefficient of 78.3%, a provisional assignment to a non-sequential floor in the Acoustic Verticals (tentatively Floor 212, “The Listening Gallery”), and is cross-referenced with fourteen separate entries in the Register of Unclosed Loops and the Register of Resonant Pairs.

Entries are color-coded by their ontological status: Blue for probabilistically certain (85-100%), Green for likely (60-84.9%), Amber for contingent (30-59.9%), and Grey for speculative but formally petitioned (0-29.9%). Grey entries are reviewed biannually; their persistence for more than a decade without an increase in coefficient is grounds for transfer to the Ancillary Register’s “Dormant Potentialities” annex.

Compilation and Amendment

The Register is compiled by the Progressive Indexers’ Collective, a sub-chapter of the School of Latent Precedence. New entries are proposed via Form OV-7 (“Petition for Probabilistic Inclusion”), which requires sponsorship from a certified Minor Functionary of at least Grade VII. Amendment occurs in three circumstances: upon the materialization of a holding (the entry is struck through and moved to the Master Index), upon a statistically significant shift in its Likelihood Coefficient, or upon the discovery of a conflicting entry in the Register of Irregular Acquisitions that negates its possibility.

The most common cause of amendment is not realization, but inter-register conflict. A notable case, documented in Amendment Theta to the Twelfth Concordance, involved the “Moss Calipers,” which appeared in the Register with a 92% coefficient for seventy years before being catalogued physically via a legal exception, thereby bypassing the Register’s predictive function entirely and requiring a footnote covering 14 pages to reconcile.

Legal and Ontological Standing

The Register occupies a unique legal position. Per Docketed Intent ruling 45.7.c, entries in the Register “shall not be considered evidence of existence, but may be cited as evidence of administrative expectation.” This allows them to be used in budget allocations for future shelf-space and in staffing requisitions for future Vigils, but prohibits their use in disciplinary hearings or disputes over current resource allocation.

Its ontological standing is a perennial source of scholarly debate. The Faction of the Concrete Archive argues that the Register’s entries are merely “structured wishfulness,” while the Office of Ontic Verification maintains they are “shadows cast by future cataloguing events.” This debate is itself catalogued in the Register of Unanswered Questions under Query 8991: “Does the act of predicting a non-thing alter the probability of its eventual materialization?”

Notable Subsidiary Logs

The Register spawns several active subsidiary documents. The Log of Coefficient Drift tracks entries whose likelihood changes by more than ±5% in a fiscal quarter, requiring a formal review. The Index of Provisional Cross-References maps relationships between probable holdings, often creating dense networks that predate any physical manifestation; this index is the primary source for updates to the Register of Resonant Pairs. Finally, the Register of Standing Requests|Standing Requests]] for the Register itself is a meta-log where scholars petition to consult specific probable holdings, a process described as “requesting permission to anticipate a future request.”

Controversies and Anomalies

The Register is not without controversy. The “Case of the Premature Stairwell” involved an entry for a spiral staircase with audible regrets (Coefficient 41%) that began appearing as a faint olfactory phenomenon (described as “dust and disappointment”) on Floor 117 decades before its coefficient passed 50%. This led to the creation of the “Stasis Advisory Variance” (SAV) protocol, now managed by the Office of Ontic Verification, which places certain high-interference probabilities under observational quarantine.

A more persistent anomaly is the Register’s own entry within itself. Listed as “Register of Probable Holdings (Definitive Edition)” with a Coefficient of 99.98%, it is the only document that predicts its own finalized state. This recursion is the subject of Unclosed Loop #441, and its coefficient has not changed in 300 years.