I'm guessing he means before they hear and learn the art of speaking, but I kinda believe so, then again, I saw two deaf people talk at work and they still moved their mouths, though obviously nothing came out
That's because they still learned to associate mouth movement with communication. Answers: http://www.straightdope.com/columns/read/2486/in-what-language-do-deaf-people-think
"Hey deaf person. Do you think in sign language?" *No answer.* "I ASKED YOU A QUESTION!" *No response. "Forget it."
Oh right, I've heard of deaf people being able to lip read too and the link is logical... it kind of brings up another topic in my head... I know a boy a year younger than me who was born with no ears, he can hear with a hearing aid and he's very sweet, but how can you hear with no ears?... he must be lucky enough to be born with ear drums or something but I dunno...