How do you know the audience wants you to succeed? Think about your reaction when a presenter screws up at a technical presentation. If you at all identify with the presenter, and you probably do, when the presenter messes up you cringe and start looking for exits, *just like the presenter*. Think about your reaction when a presenter knocks it out of the park --- you're happy, right? Not just happy for them, but happy. A live well done technical presentation gives you some of that "I'm on top of the world" glow. The audience wants you to succeed because they're just like you, and you want the presentations you attend to succeed.