Gittin 71 - July 26, 8 Av

According to Rav, a deaf person who can write can write a note instructing others to give a get to his wife.  The Gemara points out that his law is debated among tanaim. The Gemara here is grappling with issues of people with disabilities and is aware of the fact that although people may be categorized into a particular group, there are shades within each group and there are those with higher intellectual capabilities.