It's much easier to focus. No loud noises distracting him. He can tune out from the world in seconds. It's one of the many reasons why Dan knows being deaf isn't a disability. He's not broken. Others use their voice to talk, he uses his hands, expressions and body language. Of course, Dan could never be friends with a hearing person. They all feel bad for him and they shouldn't. All he has are his other deaf friends from University. When he stumbles upon someone new, his opinions start to alter. (The cover is sign language. It is not some sort of rock and roll thing.)