I'm often asked for help in preparing slides for presentations. My advice is always to make them more VISUAL, that is: use pictures, photos, graphics, tables, charts.
Why? Because audiences understand more and retain more information received as visual than they do information received as text or as spoken word. Hearing and reading are less effective than SEEING. The combination of SEEING a photo and HEARING the speaker talk about it has greater impact than for example hearing the speaker say words while reading the same words in, for example, a bullet point.
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