[[>]] [[module Rate]] [[/>]] **Item #:** SCP-43109 **Object Class:** Euclid **Special Containment Procedures:** SCP-43109 is contained in a standard human-safe anomalous item locker at Site-17. The object is stored exclusively in physical form; digital recording, replication, or surface scanning is prohibited following evidence that derivative representations do not activate the anomaly but complicate containment tracking. SCP-43109 is to be handled only by personnel wearing Class-III tactile isolation gloves. Direct skin contact is prohibited outside of approved testing. Personnel exposed to SCP-43109 are to be immediately isolated from both the object and any other exposed individuals. Isolation distance and duration are determined according to Exposure Recovery Protocol 43109-R, which scales proportionally with cumulative contact time. Under no circumstances are two exposed individuals to be housed within the same facility wing. Classification reflects the difficulty of preventing secondary exposure through compromised personnel rather than inherent object hostility. Containment is considered stable as long as physical contact is prevented and exposed individuals remain separated. **Description:** SCP-43109 is a small, smooth wooden ball approximately 7 cm in diameter. The object shows no anomalous properties when observed or manipulated indirectly. SCP-43109 does not emit radiation, signals, or memetic effects at a distance, and does not propagate without direct contact. The anomaly activates exclusively through direct skin contact. Upon initial contact, subjects report a vivid sensation of reliving a memory. The experience is emotionally detailed and internally consistent, but does not correspond to any event the subject has previously lived. Subjects universally describe the experience as familiar rather than imagined. **Observed Effects:** Stage 1: False Familiarity Within seconds of contact, subjects experience a strong sense of déjà vu associated with a specific scenario: locations, relationships, and emotions that feel autobiographical but are objectively unknown to the subject. Initial emotional responses vary significantly between subjects. Cognitive testing confirms that the subject recognizes these memories as “their own,” despite being unable to reconcile them with their personal history. Stage 2: Memory Destabilization Following exposure, subjects begin to question the authenticity of their real memories. Reports include difficulty determining whether current events are occurring in the present or are recollections. Subjects often express distress when asked to describe childhood memories, stating they “feel borrowed” or “edited.” Stage 3: Identity Drift With continued or repeated exposure, the false memories increase in volume and coherence. The subject’s original memories degrade proportionally, losing emotional weight and narrative clarity. Subjects begin to show behavioral alignment with other exposed individuals, despite no shared background or communication. Stage 4: Convergence Advanced subjects demonstrate emotional attachment to other exposed individuals and attempt to seek physical proximity. When prevented, subjects report anxiety comparable to separation from a long-term partner. At this stage, subjects no longer recognize their own reflection, personal relationships, or living environment as familiar. Stage 5: Replacement (Irreversible) Complete replacement of personal memory occurs. The subject’s identity stabilizes around a consistent set of memories shared by all individuals who reach this stage. **Addendum:** **Addendum 43109-01:** Cross-Subject Consistency Despite differences in age, culture, and language, all subjects who reach Stage 3 or beyond report the same memories, described from a first-person perspective. These memories correspond to the life of a single unidentified individual. No discrepancies have been observed. **Addendum 43109-02:** Interview Log Interviewed: D-54192 Exposure: 14 seconds (Stage 2 regression achieved after 19 days of isolation) Interviewer: Dr. Sanz Dr. Sanz: Can you describe the memory you experienced? D-54192: I can, but it doesn’t help. It wasn’t dramatic. Just ordinary. A kitchen. Someone humming. I knew where everything was supposed to be. Dr. Sanz: Did you recognize anyone? D-54192: No. That’s the problem. I recognized myself. Just not as… me. Dr. Sanz: And now? D-54192: Now it feels like remembering a dream someone else insists is important. Addendum 43109-03: Recovery Attempts Separation from SCP-43109 and from other exposed individuals results in gradual recovery, provided exposure time has not exceeded critical thresholds. Recovery time ranges from hours to several years. Subjects who reach Stage 5 do not recover.