Sheesh. "If you can get away with it," indeed. Most of these 'strategies' simply say: I am far more important than you, and if you want any of my time, you'll get it when and if I damned well please. In particular, strategic incompetence is the most obnoxiously passive-aggressive behavior ever. This might work for pmarca or Arnold, but for most of us it is career-limiting for everyone to think you're a dick.