Good liars aren't nervous about manipulating others; rather, they are confident, dominant and relaxed as they exploit others. Whether expressing happiness, surprise, sadness or contempt, good liars can wrinkle their brows, raise their eyebrows, or bare their teeth in convincing ways that belie their true emotions. Effective liars say enough to be believed, but no more. To avoid sounding dishonest, good liars avoid this reconstruction-on-the-fly strategy of storytelling. Zero variation means that listeners have no discrepancies to key in on.

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