In Week 1 of the 2012 season, no ranked team lost to an unranked foe. An optimist might see that and suggest a trend, say that the rankings have proven accurate and predict another clean sweep for the Top 25 teams.
But a realist would disagree. A realist knows that we're due for some upsets.
It happened two years ago, when unranked Baylor beat No. 14 TCU. The year before that, No. 15 Pittsburgh fell at unranked Utah's hands. And who could forget even bigger Week 1 upsets in 2008 and 2007?
So a word of advice to this year's Top 25: Don't take solace in last year's success.
It will only set you up for failure.