During the evolutionof styles, especially the usage fromsingletopluralism, it followedhistoricalcontinuityanddevelopment, stabilityandvariability, which are objectivelaw.
Most of the people who teach at BGI move on within a few years, so the wheel for most course sequences is reinvented all the time, which implies huge adjustment and faculty-training costs and little continuity in curriculum development.
That move was aimed at maintaining the continuity of Brazil's economic development which was pretty much based on the strong role and cooperation of the business community.