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The BCS also arguably enhances competition through its use of empirically-influenced rankings. Each team's BCS ranking is a composite of three equally-weighted components -- the USA Today Coaches Poll, Harris Interactive College Football Poll (which comprises 114 voters, including former coaches, players, and journalists) and an average of six computer-based rankings that incorporate largely objective measurements, such as won-loss record and strength of schedule. To be sure, this arrangement is complex and partially opaque -- private companies that run each computer rating can shield their formulas from public scrutiny. Nonetheless, the use of factual criteria to complement the subjective impressions of coaches and journalists can be viewed as a positive: they are designed to improve accuracy and fairness.