Dan (rank) is by far the most recognizable symbol to the general public. The highest dan ranks are sometimes reserved for the founder or leaders of a style and only high-ranking students can be promoted to them. For example, only five living people hold a tenth dan in judo and only about thirty-five worldwide have been promoted to the rank since its inception; of those 10th dan promotions only fifteen were conferred by the Kodokan, all of them to Japanese judoka. This has led to upper level ranks becoming extinct in some arts. In other styles, the dan ranks are not the
Judo in Canada at the University of Ottawa, "Influences on the development of beliefs of Canadian expert judo coaches and their impact on action" (1998), describes the beliefs of Canadian Judo coaches and how these beliefs were represented in their actions during training. And finally, Michelle Rogers' MA thesis in Anthropology at the University of Victoria, "Twentieth Century Travels: Tales of a Canadian Judoka" (2005), examines the life of her father, Olympian Doug Rogers, and uses his story as a case study of how large-scale global processes can influence the life of an individual. Judo has not received widespread attention in Canadian television