In this short post, Seth Godin gave some hints about creating better presentations.
While they are hints to improve public speech, they are valuable also for presentation documents as well.
Time is precious therefore saving some of it is valuable. The same principle can be applied making documents that don't consume audience time more than the necessary.
This is good advice. A slide should empower the presenter. A good slide should dialogue with the presenter.
This is connected to the way a presentation document should be crafted. The personality and the personal presence matter. All these things cannot be substituted by a bunch of slides. A presentation document is a tool to enhance a personal presentation, not the other way around.