There is more to a demo than just showing the products. Yes, the actual demo has to be as close to perfect as possible, but also the environment has to be perfect.
A broken projector, a bad connection, or even a messy conference room at the customer site could all lead to a not so great outcome. That is not to say that the demo or presentation were bad, but to say that everything around the demo can affect the demo negatively or positively.
That is why Peter Cohan, the author of Great Demo! is back to discuss the perfect demo environment.