“You think you know everything” What That Phrase Really Means.
- Colleen MSc

- Feb 25
- 2 min read
A few phrases are as dismissive as:
“You think you know everything”
It’s rarely said with curiosity.
It’s almost always said with defensiveness.
And interestingly; it usually shows up in moments where knowledge, competence, or confidence are on display.
But let’s unpack something important:
As a Psychologist, I’ve spent my career studying humans in the workplace and I can flex my skills because I did the work and outside of my career, I am well read and if I don’t know something I look it up. If I don’t know a word I find it. Why? … My curiosity has always been a factor in my intelligence and that is something we can all do, so respectfully don’t hate me for your choices or lack of curiosity.
Now that’s out the way …. Let’s unpack this psychologically.
When someone shares information, experience, or expertise, there are two possible reactions.
A secure person thinks:
“Interesting I didn’t know that”
An insecure person
“Why do they know that and I don’t?”
The first reaction leads to growth
The second leads to ego protection
And ego protection often sound like these insecure words “YOU THINK YOU KNOW EVERYTHING”
Correction.
No you think I know everything and it hurts your feelings.
Most of the time, that statement is not about arrogance it’s seeing someone as a threat.
In the workplace and professional spaces this phrase can surface from:
•Someone feels overshadowed
•Expertise shifts the power dynamics
•A colleague feels exposed
•Confidence is misread as superiority
High performers often encounter this more than they expect. Especially those who are a articulate, well read, or experienced across disciplines.
In personal relationships this phrase can signal something deeper a lack of intellectual security or difficulty celebrating others strengths, competition where there should be collaboration.
Healthy dynamics make room for both parties and for both people to know different things.
There is no trophy for being “ the smartest in the room” there is only growth when knowledge is shared without threat.
What’s a healthier response:
When a person says “You think you know everything” consider the following replies:
“I don’t know everything , I just enjoy learning and reading, what your perspective?”
Sometimes this can help defuse the tension and sometimes it reveals it.
Either way just know that confidence is not arrogance competence is not ego and curiosity should never require an apology.




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