I’ve seen it documented with respect to two different naturally occurring deaf communities, where a spontaneous genetic mutation lead to large numbers of deaf children being born within a single generation.

In each instance, the children develop real grammatical sign language on their own.

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Writer. Runner. Marine. Airman. Former LGBTQ and HIV activist. Former ActUpNY and Queer Nation. Polyglot. Middle-aged, uppity faggot. jamesfinnwrites@gmail.com

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