# Earth Echo > EXAMPLE WORLD DOSSIER · PROVISIONAL FICTION > RECORD: WRLD-ECHO-007 · VERIFICATION: UNCONFIRMED ## I. Reality Summary Sounds persist as localized repetitions long after their sources disappear. Streets preserve conversations, alarms, and footsteps in overlapping layers. Some echoes contain speech that no witness remembers making. ## II. Divergence An experimental communications medium appears to have coupled sound with persistent spatial states. No single disaster followed; the phenomenon spread until ordinary public conversation became a privacy hazard. ## III. Physical Conditions Breathable air; approximately 1 g. Echo density rises near enclosed masonry and running water. Repeated sounds have no obvious energy source. Directional microphones disagree about where a voice originates. **Temporal behavior:** Different districts disagree by up to one day. **Proposed stability index:** 54/100, an authoring value rather than an established instrument reading. Dates, dimensional frequency, and confidence remain blank until the story establishes evidence. ## IV. Sociological Conditions Quiet conduct is a civic norm. Written exchanges replace spoken contracts, and acoustic surveyors certify buildings before occupation. Removing a cherished echo can be treated as destruction of a memorial. ### Places and encounter possibilities The Listening Quarter layers generations of domestic sound. The Dry Archive preserves records in acoustically damped chambers. An abandoned tram stop repeats a warning in Ned’s voice. ### Field precautions Do not answer a disembodied voice with personal information. Mark live and recovered audio separately. Hearing protection reduces exposure but does not establish that an echo is harmless. ## V. Linked Records - [[Earth Prime]] — reference reality and return comparison. - [[Earth Clockwork]] — comparative world; similarities are a research lead, not proof of a shared cause. These are ordinary links so the dossier and graph work in Obsidian Publish. Places, people, and phenomena mentioned above are story seeds within this world, not additional record categories or separately confirmed records. ## VI. Personal Notes *Proposed Ned voice, not a numbered outgoing transmission:* > I followed my own voice for three blocks before remembering that I had not spoken. **Open investigation:** Can future speech be heard here, or are plausible voices synthesized from visitors? Who benefits from an echo being accepted as testimony?