The thing about people with cerebral palsy is that...
too many people are willing to treat them as retarded or mentally disabled. When I went to college, there was a guy like Bill, but who was much more handicapped. His speech was very difficult to understand, and he could not feed himself. People treated him like he was two years old, and talked down to him accordingly. He was the one who had infinite patience with those around him. This good man had an accounting degree, and he was condescended to to the nth degree.
I tried to treat him like anyone else, and he expressed his appreciation, but I always had a hard time understanding him.