We've all been stuck at a dinner party talking to someone who truly believes they know much more than us - about basically everything.
But according to a new study out of California, in turns out those people who are able to admit their own views might not actually be, in fact, cleverer.
Researchers at Pepperdine University studied the idea of "intellectual humility" and the ability to learn across 1200 participants.
The study, published in The Journal of Positive Psychology, revealed that the 'certainty' of thinking you're always right means that you're less good at drawing the right conclusions in many situations.
Leader of the study, Dr Elizabeth J. Krumrei-Mancuso, said the research demonstrated "those who believe knowledge is certain are likely to incorrectly draw definitive conclusions from ambiguous evidence".
On the other hand, having higher intellectual humility "was associated with more accurate assessment of one's general knowledge".
"That is, knowing (and being willing to admit) what you don't know may be the first step to seeking new knowledge."
However she said the perception of intellectual humility wasn't quite as accommodating.
"When it comes to beliefs, people tend to appreciate others being open-minded, yet they may also view people who are unsure about their beliefs as weak or they may view those who change their viewpoint as unstable or manipulative," she said.