How extraordinary that this wonderful tool - probably the best ever invented for presenters - has caused a decline in the quality of presentations. When PowerPoint first arrived, there were two reactions. Many presenters thought, excellent, now I don't have to be the centre of attention, and moved to the side of the room to provide commentary. Others thought, excellent, now I can impress everyone with whizz-bang electronic effects, and set about annoying their audiences. Many believe that using PowerPoint automatically makes them effective, when the reverse is usually true.