Sony Corporation has adopted a syllogism for its advertising campaign for the PSP, a handheld video-game player beloved by slackers everywhere: Teenagers like video games. Teenagers think that stupid, risky stuff is cool.

Therefore, our ad campaign will be risky. And stupid.

This principle was first embodied by the faux-graffiti ads adorning the sides of buildings in New York and elsewhere. The ads managed to enrage both politicians, who said they promoted graffiti, and graffiti artists, who said they epitomized the ...