In the Documentary "Kish" by Zackary Canepari and Drea Cooper, the every day life of Daniel Kish is explained and exemplified using many different rhetorical techniques and styles. Kish lost both of his eyes at only 13 months of age, but he has taught himself through many years of research and practice to use sonar through sound to help him "see" with his ears.
The directors made use of comparisons to dolphins quite often actually, and I think that it was very effective in helping the viewers understand exactly what the technique is. It is actually pretty amazing that humans can do this with their bodies because of how sophisticated and complicated it is. In fact, the bio-sonar technique dolphins use is a "very sophisticated high performance system that continues to outperform any man-made system within its operating regime." (Fulton 1).
Daniel detects where he is and what he is around by making a "clicking" sound with his mouth and using a cane to feel around. This clicking sound being played over and over is the first rhetorical technique I noticed. The directors chose to play the clicking sound that Daniel uses almost continuously throughout the film, which I think really helped to show the viewers how often the clicking is used and how important it is to the success of sonar vision.
Music, as a rhetorical device in this film, greatly contributes to the mood the viewer is feeling while watching. I wouldn't even call it music actually, more like background sounds that help to create the central feeling of loneliness in this film that someone with no eyesight must feel every day. The eerie, echo-like sounds throughout the film were very successful in making the viewer feel alone and somewhat frightened, like they were walking alone in the dark.
The directors also incorporated childhood pictures of Kish, which were honestly very sad and pitiful to look at. The pictures showed Kish as a young boy with two missing eyes, glasses to cover them, and a grin on his face. The pictures were very effective in helping the viewer to understand exactly how long he had been living this way and what he had to endure as a young child.
Pathos was used pretty strongly when Kish himself was speaking about how blind children are not given the same opportunities as normal kids, and how they are looked down on by most people. He spoke about how blind people, no matter what age, have the ability to persevere and learn to live a good life. After researching, Kish is spot on concerning the mistreatment of the blind. According to activist group Action for Blind People, "blind and partially sighted people were four times more likely to be physically abused each day than sighted people." (Lowell 1). This is believed to be because according to Stephen Remington, chief executive of Action, "visually impaired people can be seen as vulnerable and an easy target for anti-social behaviour.” (Lowell 1).