No tech executive draws more bile and disdain than Ash Patel. So why is Yahoo president Sue Decker promoting him to fill the place of several departing executives? Let me keep it short and sweet: Decker is a charmless Wall Street type who's bad at managing people. Patel's main skill, one that has kept him at place in Yahoo for 12 years, is managing up. His second talent: making excuses for the fact that he's rarely seen on campus before 10:30. No one who's serious at Yahoo has any respect for Patel, and no one who's sensible cares to report to him. Decker's plan is succeeding in one regard: All the departures Patel's promotion is sparking will surely reduce costs.