new tribes found that speak in sign language

Glenn R. Morton (
Fri, 26 Jun 1998 21:27:15 -0500

There is a report today about the discovery of two tribes in Indonesia
which speak in sign language, not vocally. This may be the first case of
human tribes found which do not use vocalization. I am somewhat suspicious
of it (the Gentle Tasaday tribe in the Philippines were a hoax). Since
this is such a unique discovery, I would think some scepticism is
warranted. The report can be found at

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