While current debates oppose the cochlear implant's privileging of speech acquisition to teaching sign language, nineteenth-century debates, in contrast, opposed those who saw sign language as a tool for learning to read and write, and those who saw in it an autonomous language for organizing thought itself. Should the order of gestural signs…

This article reports on the training of a blind foreign language teacher of sighted students and the designing of a substitute of the board. A composition of computer devices available today was provided to the blind teacher in order to get pieces of writing projected on a screen. This basic instrument was transformed through instrumental geneses…