20 Public Speaking Tips of the Best TED Talks

flickr: Ted Conference
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Don't Make Excuses

Now let’s look at a few things you should stop doing.
Due to insecurity many speakers open with an excuse: "I didn’t get much time to prepare…" or, "I’m not very good at this…"
Excuses won’t make your audience cut you any slack, but they will make people think, “Then why are you wasting my time?” Do what you need to do to ensure you don’t need to make excuses.
Watch Tom Wujec on teambuilding.