Seismic Shifts
Seismic Shifts — A long arc A long-arc seismograph showing the presence of Deaf life and signed languages from 65,000 years before present to today. The trace runs at a historical baseline through the deep past of Aboriginal sign languages including Warlpiri and Yolngu, with parallel deep-time traditions including Plains Indian Sign Language. It rises slightly through European institutional emergence in the 18th and 19th centuries — Ponce de León, Bonet, l'Épée, Braidwood, the founding of the American School for the Deaf at Hartford, and Gallaudet College. It plummets sharply at the 1880 Milan Congress, deepens through the eugenics era of Alexander Graham Bell and his contemporaries, the 1907 Indiana sterilisation law, Australian assimilation policies, and the 1933 Nazi sterilisation law and Aktion T4. It rises slowly from 1960 onwards through Stokoe, the naming and recognition of Auslan, Deaf President Now, the official recognition of NZSL, and the 2010 ICED apology for the 1880 resolutions. The trace ends at 2026 still below the historical baseline. The right ten per cent of the page is intentionally left blank — the unwritten near future. Seismic Shifts A long arc — 65,000 years of presence and the seismic moments that have shaped it A0 / 1189 × 841 MM / LANDSCAPE RAVI VASAVAN / 2026 COMPANION TO THE DIGITAL TRACE DEAF LIFE & SIGNED LANGUAGES — PRESENCE OVER TIME EUGENICS ERA UNWRITTEN the near future, not yet drawn BASELINE historical norm CELEBRATED SUPPRESSED DEEP CONTINUITY EARLY DOCUMENTATION WESTERN INSTITUTIONAL EMERGENCE SLOW RECOVERY ABORIGINAL SIGN LANGUAGES WARLPIRI · YOLNGU · ARANDIC · PITJANTJATJARA · NGADA · WESTERN DESERT c. 65,000 BP — continuous transmission PLAINS INDIAN SIGN LANGUAGE — HAND TALK parallel deep-time signing tradition c. 1550 — PONCE DE LEÓN first documented European deaf education 1620 — BONET first treatise on deaf education; manual alphabet 1755 — L'ÉPÉE first free school for the deaf, Paris; LSF as language of instruction 1817 — HARTFORD American School for the Deaf; ASL emerges 1864 — GALLAUDET COLLEGE Washington, DC — chartered 1880 MILAN CONGRESS 164 hearing delegates vote to ban sign languages from deaf education in favour of oralism 1883 — AGB Memoir Upon the Formation of a Deaf Variety… Bell & contemporaries 1907 — INDIANA first US sterilisation law AUSTRALIAN ASSIMILATION POLICIES suppression of Aboriginal languages, including Aboriginal sign systems 1933 — NAZI STERILISATION LAW 1939–45 — AKTION T4 ~17,000 deaf people sterilised; thousands murdered 1960 — STOKOE ASL shown to be a natural language 1975 — AUSLAN NAMED 1988 — DEAF PRESIDENT NOW 1990 — ADA Americans with Disabilities Act 1995 — AUSLAN RECOGNISED 2003 — NZSL OFFICIAL 2010 — ICED APOLOGY rejection of the 1880 resolutions 2022 — BSL ACT BSL recognised in the UK 2026 — TODAY not yet at the line it left 65,000 BP 10,000 BP 1500 1750 1880 1945 2026 — ? TIME SCALE NON-UNIFORM — DEEP PAST COMPRESSED, MODERN ERA EXPANDED
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