The Brazilian Jiu-Jitsu ranking system awards a practitioner different coloured belts to signify increasing levels of technical knowledge and practical skill. While the system's structure shares its origins with the judo ranking system and the origins of all coloured belts, it now contains many of its own unique aspects and themes. Some of these differences are relatively minor, such as the division between youth and adult belts and the stripe/degree system. Others are quite distinct and have become synonymous with the art, such as a marked informality in promotional criteria, including as a focus on a competitive demonstration of skill, and a conservative approach to promotion in general.
Traditionally, the concept of competitive skill demonstration as a quickened and earned route of promotion holds true. Some schools have placed a green belt for adults between the white and blue belt ranks due to the long periods between advancement. In addition, the use of a grey belt has been instituted for many children's programs to signal progress between the white and yellow belt rankings. The amount of time it takes to achieve the rank of black belt varies between the individual but the average time frame is between 8 and 10 years with a consistent training schedule of 3 to 4 times per week.
Read more about this topic: Brazilian Jiu-Jitsu
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“The only phenomenon with which writing has always been concomitant is the creation of cities and empires, that is the integration of large numbers of individuals into a political system, and their grading into castes or classes.... It seems to have favored the exploitation of human beings rather than their enlightenment.”
—Claude Lévi-Strauss (b. 1908)