You would buy something purely on the strength of a demo? If so I hate to break it to you but there's often a lot of smoke and mirrors behind live demos, indeed

You would buy something purely on the strength of a demo? If so I hate to break it to you but there's often a lot of smoke and mirrors behind live demos, indeed if the demo jock is good enough you might not even know you are watching a video. In my experience most reasonable audiences are aware of Murphy's law and forgiving of it. My original point was that according to the training I received there are better ways to handle this type of situation. I don't think you've refuted that point.