granted the question is rather ambigious...
but sounds like she meant, why don't interpreters voice while they are signing....simple answer in my opinion is they haven't been taught that.
its been my expierence that interpreters, for the most part, get most if not all of their expierence in signing from school. And thats great, being able to communicate formally is very important. But they don't expierence the different ways that deaf people communicate.
Its been my personal expierence, that deaf people who are mainstreamed in school, prefer that you voice when you sign, so that they can hear your tone, read your lips, and read your sign.
i learned all of my sign from my job and deaf friends...i have some friends that i sign ASL only without voicing, others who prefer i voice when i sign, and one who doesn't need me to sign at all, she prefers to just read my lips in most situations, tho she can sign very well.
i believe interpreters in school are taught the "right" way...same as an english class won't teach you slang, but you will be able to communicate.
again, its all jsut my opinion
