Today is the second presidential debate of 2012. President Barack Obama's campaign is telling reporters that their candidate is planning to "be more aggressive and show more passion this time around." Mitt Romney's advisers are saying he "intends to build on the progress he made in the first debate by conveying authenticity." The reports about the candidates' debate preparation suggest Obama may have the wrong idea about what he faces today. Winning depends very little on actually debating one's opponent.