CASE-1929 is not to be transcribed, recorded, or repeated under any circumstances. All audio and textual artifacts identified as CASE-1929 instances are to be incinerated or magnetically destroyed. Any personnel exposed to CASE-1929 phonemes are to be quarantined immediately and monitored for Phase One onset by ARU "ALIENISTS".

Research into counterlinguistic barriers is ongoing. All experimental language systems derived from CASE-1929 are suspended indefinitely. Exposure testing has been banned by order at Executive clearance level.

Instances of CASE-1929 discovered in digital archives are to be purged using embedded memetic filters. No attempt is to be made to reconstruct the language.

The C/M/P hazard classification carries the -PENDING modifier. Exposure testing is suspended, and counterlinguistic barrier research remains incomplete. Formal hazard categorization is withheld pending reconciliation of the conflicting theoretical models on record.

CASE-1929 is a language of unknown origin that cannot be traced to any known linguistic family. Exposure occurs through auditory, visual, or conceptual transmission. Subjects exposed to CASE-1929 undergo irreversible cognitive restructuring characterized by progressive linguistic realignment and perceptual distortion.

Initial exposure (Phase One)
Manifests as spontaneous phoneme production during sleep or heightened emotional states. Subjects begin to write or speak symbols matching CASE-1929 structure without conscious intent. Transcriptions resemble ancient scripts, including Ge'ez, Linear A, and unknown logographic systems.

Phase Two
Includes partial comprehension of CASE-1929 syntax. Subjects describe visual overlays affecting spatial perception and identify geometric "stress points" in people and objects. Their attempts at communication shift toward CASE-1929 vocabulary. Use of the language produces low-level environmental effects, including minor structural warping and memory interference in nearby individuals.

Phase Three
Results in complete abandonment of the native language and exclusive use of CASE-1929. Subjects exhibit changes in their perception of time, gravity, and causality. At this stage, vocalizations in CASE-1929 cause spontaneous biological failure in listeners and localized reality degradation. Phase Three subjects are non-recoverable.

Linguistic analysis suggests that CASE-1929 is not a descriptive language but a functional framework: language as executable structure. Evidence supports the theory that CASE-1929 is the remnant consciousness of a pre-conceptual entity that once exerted direct influence on matter through pure expression. The language is not about the entity. The language is the entity.

Attempts to communicate with CASE-1929-speaking subjects result in auditory hallucinations and phrase mirroring.

CASE-1929 was first identified in 1929, during the excavation of an archaeological site in southern Mesopotamia containing pre-Sumerian artifacts. Initial manifestation occurred when researchers attempted to transcribe and phonologically reconstruct symbols found on recovered tablets. The anomalous properties were recognized after the first documented case of Phase Three progression, which resulted in a catastrophic loss of personnel. All recovered artifacts have since been contained or destroyed in accordance with Bureau containment protocols.