Ideally, it's best practice to create two things: the powerpoint presentation that allows you to exhibit diagrams and charts that illustrate what you are saying

Ideally, it's best practice to create two things: the powerpoint presentation that allows you to exhibit diagrams and charts that illustrate what you are saying, but then secondly a handout that puts in text what you've said, and includes the same diagrams. You speak your piece, using PPT to show diagrams only, not slide-after-slide of words (the words are coming from your mouth). That means the PPT as a handout is useless, and you have to create a separate 3 page (or so) text document that also includes the graphics. That however is extra work - and a lot of extra time, and hardly anyone does it. The real culprit here is the "time saving shortcut" of simply printing out your PPT as a handout. In order to make it useful, you need the words on the slides. Now you've got slide-after-slide of bullet point lists and text, and that urges you to commit the second sin, which is turning your back to the audience and reading the slides from the stage. To automatically to revert to good form, the trick is to realize there are three things: the words you speak, the images you project on the screen, and a handout that combines both. That allows PPT to revert to what it is truly good at, which is showing pictures on the screen. But ... it's more work!