mrjames
Professor
Posts: 6062
Loc: Montclair, NJ
Reg: 11-21-04
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11-15-17 02:13 PM - Post#236397
In response to internetter
They were of little consequence in the era before informed priors. Back when the ratings just floated (i.e. everyone started at the same place), it took a month or so before there was enough data to understand who you beat, how good they were and what that meant about how good you are.
With the preseason rankings solidly solving for much of that "unknown," the movement based on results early in the season is actually far more stable than it used to be. You'd still want to wait a few weeks if a team seems to be outperforming its preseason rank to see if that outperformance holds up over a longer period of time, but under the new systems, we can feel more confident about team quality earlier than we could, say, a decade ago.
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