20 Public Speaking Tips of the Best TED Talks

flickr: Ted Conference
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Don't Overload Your Slides

Here’s a simple rule of thumb: Make your font size double the average age of your audience. Roughly speaking that means your fonts will be between 60 and 80 points.
If you need to fit more words on a slide that means you haven’t tightened your message.
Watch Michael Porter on solving social problems.