Words or phrases that could come in handy as BCS debate mounts during the second half of the season.

TRIMMING: The method Harris Interactive representatives use to alter someone's vote if it is deemed too far out of sync with the rest of the results. For example, if USC is ranked No. 1 on 85 ballots but one person ranks the Trojans No. 13, that vote could be altered in the final tabulations because it is deemed out of the range of reasonable possibilities.

THE IDAHO EFFECT: What happens when a voter unintentionally votes for a school. In the first Harris poll, a winless Idaho team received five points. The next week, the Vandals won a game and lost all points, as apparently the voter realized his miscue the previous week.

ELO-CHESS: What Jeff Sagarin calls his computer poll, one of the six the BCS uses as part of its formula. Sagarin's "Elo-Chess" accounts for home-field advantage, unlike some of the computer polls, but does not consider margin of victory.

COLLEY MATRIX: The complicated mathematical formula Wesley Colley uses for his computer poll, which is part of the BCS formula and does not account for game location. The results so far are curious. Virginia Tech, USC and Texas, the top three teams in all three human polls, are no better than fifth. And Oregon (5-1) is seventh, one slot ahead of Texas (5-0).