Oneiric Taxonomies

Oneiric Taxonomies refers to the specialized branch of archival science concerned with the systematic classification, codification, and shelving of dream phenomena within The Tower. It is distinct from, though often overlaps with, the work of the Dream-Scribes who record the raw material and the analysts who study Oneiric Resonances. The primary goal of Oneiric Taxonomies is to impose a navigable, if provisional, order upon inherently subjective and mutable contents, as mandated by the Third Concordance, Annex VII, Clause 12.

Core Principles and the Unitary Problem

The foundational challenge of Oneiric Taxonomies is the "Unitary Problem": establishing a discrete, shelvable unit from a continuous, narrative dream experience. A common solution is the application of Borrowed Coherence coefficients to isolate dream-segments with internally consistent logic. These segments, termed "Oneiric Unitarics" (not to be confused with the broader concept of a Unitary in Integral Taxonomies), are then assigned a primary Oneiroscone classification. The choice of Oneiroscone—whether Oneiric, Hypnagogic, Hypnopompic, or one of the seven Ludic subtypes—determines the initial shelving corridor. A persistent scholarly dispute, referenced in the contradictory amendments to the Seventh Concordance, concerns whether the emotional temperature, measured in Oneiric Kelvin (OK), should supersede narrative logic as the primary taxonomic determinant.

Standardized Metrics and Annotation

Taxonomic rigor is maintained through a system of standardized metrics. All catalogued dreams are annotated with their OK rating, a Luminance Factor (for brilliance of imagery), and a Narrative Entropy score. Official annotation must be performed using Oneiric Blue ink, as per Central Scriptorium Formula 12-D, to prevent confusion with waking-world records. The Department of Ephemeral Taxonomies on Floor 14,302 maintains the master calibration tables for these instruments. Disputes over metric application, such as the notable case of refractive index deviations in dust particles noted by the Senior Librarian for Particulate Taxonomies in Spiral 77, are adjudicated by the Curatorium of Verification.

Shelving Protocols and Cross-Referencing

Shelving follows the "Progressive Lattice" model developed by the Progressive Indexers' Collective. Each Oneiric Unitary is assigned a primary location based on its dominant Oneiroscone but is also linked via pneumatic tube and ledger-entry to secondary and tertiary locations representing subordinate themes, emotional tones, or symbolic motifs. This creates a non-linear, web-like reference structure within the otherwise vertical architecture of the Tower. Dreams that defy shelving, often due to containing recursive logic or portraying the Tower itself, are temporarily housed in the quarantine stacks on Floor 7,402 under "Provisional Taxonomies of Ephemeral Consensus," pending review.

Jurisdictional Conflicts and Interstitial Phenomena

The boundary between a dream and a waking-state hallucination, or between a collective dream and a minor consensus reality, is a frequent source of bureaucratic conflict. The DoIT-184 ("Directive on Interstitial Taxonomies") governs the classification of phenomena reported between numbered floors, but its application is often contested. The Custodians of the Gilded Silence, for instance, claim taxonomic authority over all dreams featuring structured silence, a claim rejected by the Department of Ephemeral Taxonomies. These conflicts are often precipitated by the discovery of new dream-logics that existing taxonomies cannot accommodate without amendment to the Concordances.

Notable Anomalies and the Mnemonic Drift

A recognized, if incurable, flaw in the system is Mnemonic Drift: the tendency for a shelved dream's content to subtly alter over time, influenced by the psychic proximity of other dreams or resonances. This necessitates periodic re-cataloguing, a task of immense scale. The most famous taxonomic anomaly is The Misshelved Codex, a dream-record incorrectly placed in the Gallery of Provisional Taxonomies in 12,442 AT (After Taxonomization), which is purported to have altered the shelving coordinates of every dream within a three-spiral radius before it was contained. Such events underscore the provisional nature of all Oneiric Taxonomies, a humility formally encoded in the preamble to the Third Concordance.