Do Deaf people know Braille?
The only Deaf people who generally know Braille are people who are suffering from Ushers Syndrome I or Ushers Syndrome II. These conditions usually cause a child to be born with deafness, and then when the child reaches adulthood, or some time later, he/she begins to lose their sight. They either have tunnel vision or complete blindness depending on the type of Ushers they inherited from their parents. These individuals often use Braille as their sight deteriorates. Your average deafie has no need to learn Sign since their only communicative challenge is not based on sight but rather hearing.