Extrememe presentation's Dr. Andrew Abela posted a interesting video from youtube. It emphasizes again on how words are more important .
Original post is here.
This specially applies to the situations of business presentations, as Prof. Mehrabian's formula ( 7% words ,38% tone of voice and 55% body language ) is not applicable to these situations. It works only when communicator is conveying about his feelings and emotions.
Thus it is paramount important that your communication speech , need to boil down to central theme or ideas ,translate those ideas into key-words . Use these key-words in your power-point/keynote slides. Experience tells that graphics associated with these key-words will further enhance your message for pursuasive delivery.
Watch this interesting video .