We all know them — the office know-it-all, or the family member who is never wrong about anything. But how did they get to be that way?
Watch this TED-Ed video to learn why people are surprisingly likely to overestimate their own abilities. In fact, research shows that those with the least ability often judge themselves to be the best.
Beware: After watching this video, you might have the sneaking suspicion that the obnoxious know-it-all in the room is actually you.
Do you know a know-it-all? Tell us about him or her by commenting below or on our Facebook page.
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