Advantage in the competition: As the article mentioned; "One official was reported to have opposed Pistorius' involvement in able-bodied races on the grounds that it could pave the way for athletes to compete wearing jet-packs on their backs."

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….