It’s not what you say, it’s how you say it. Appearing smart is about seeming excited about what you’re saying, even if it’s complete nonsense. To sound smarter, put a little energy into your voice, let the pitch and volume vary. And try to
EMPHASIZE important WORDS. In other words, talk like a radio DJ. If you can’t do that, then there’s an even simpler way to be seen as smarter than you are –just smile.

Phycology Today -

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