A TED presentation should be 18-minutes. Researchers have discovered that too much information prevents the successful transmission of ideas. TED curator Chris Anderson states that 18 minutes is "long enough to be serious and short enough to hold people's attention."
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Researchers found that although the process of becoming proficient at something took its toll on people in the form of stress, participants reported that these same activities made them feel happy and satisfied when they looked back on their day as a whole.
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