Comment Re:reasons (Score 1) 327
+1. Slides are note cards giving an outline. Some information is easier to explain with diagrams, charts and graphs, or video. Use graphics well. Keep the slides simple with 3 to 7 points per slide (to cater to human short term memory) with about one slide for every one to two minutes. No more than 30 to 40 slides for a one hour session including anywhere from 10 to 15 minutes for Q&A.
and stop after an hour. A presentation which takes more than an hour is fundamentally flawed IMO. If you must go longer take about 5 to 10 minute break each hour.
Build your presentation to how humans operate.