Lip reading

Definition and stakes

Arnold Hill Payne,  1911 Encyclopædia Britannica (1911)

“ The signs—as they are to the deaf—made by the vocal organs are entirely arbitrary, and have not even a fraction of the redeeming feature of naturalness which oralists demand in ordinary gestures. (4) Circumstances, such as light, position of the speaker, &c., must be favourable for the lip-reading to approach certainty. (5) Styles of speech vary, and it is a constant experience that even pupils who comparatively easily read their teacher’s lips, to whose style of utterance they are accustomed, fail to read other people’s lips. ”
Source: Wikisource

Various,  Encyclopaedia Britannica, 11th Edition…

“ Lip-reading is, to the deaf, sign-reading with the disadvantage of being both microscopic and partially hidden. The deaf hear nothing, they only partly see tiny movements of the vocal organs. Finger-spelling, writing, signing, are incomparably more visible, while 130 words a minute can be attained by finger-spelling, and read at that speed. ”
Source: Gutenberg

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