When you get up in front of an audience to present, you have to be prepared for things to go wrong. But having a Plan B for possible technical problems is not enough; you also need to have the right mindset to handle problems.
On more than one occasion I've seen speakers lose their cool when they ran into technical problems. Guess what? Complaining about the problem, cursing, or blaming the organisers of the event will not make the problem go away. But you risk losing your audience, too. Initially, the audience will be sympathetic when they realise that you're having a problem - they didn't come to see you fail! But it's your responsibility now to make the best of the situation. Complaining and stating the obvious will only put off your audience - the biggest support you'll have at that moment. Don't make that mistake.
