Know Less

“I don’t know.”

Three words that usually tell me someone is thinking straight. Yet they’re among the hardest words for many of us to say.

There’s a fine line between confidence and arrogance. Few have mastered the art of walking it, and fewer still have the wisdom to know when to step back. People with enough self awareness to recognize their fallibility are–in my experience–a rare breed.

The Self-Help Trap #

Modern self-help literature constantly tells us to “believe in yourself” and “exude confidence”—advice that sounds reasonable on the surface. But there’s a critical nuance these books often miss: if you’re talking past what you actually know, people can feel it. The problem isn’t confidence itself, but rather the false confidence that emerges when we overestimate our knowledge and underestimate our ignorance.

The people who most need to hear “be more humble” are usually the last to think it applies to them. Meanwhile, those already prone to self-doubt might take such advice as confirmation that their uncertainty is a weakness.

The Courage to Say “I Don’t Know” #

People who are truly confident, self-aware, and secure in themselves are more likely to be humble. The best indicator of this is how quickly they’ll say “I don’t know” when faced with uncertainty. I’ve noticed my own evolution here–I used to have great confidence in my knowledge across various domains, but now I recognize how limited my understanding truly is. I’m more likely to be wrong than right in many instances, and I’m comfortable admitting that.

Take for example a conversation about economics or climate science. These are complex systems with countless variables. Even experts in these fields acknowledge significant uncertainties in their models. Yet at dinner parties, you’ll regularly hear people speaking with absolute conviction about exactly how these systems work and what we should do about them. This misplaced certainty isn’t just annoying—it’s an obstacle to genuine understanding. I’m also guilty of this.

Last week, I caught myself explaining something I knew little about to a friend with unearned authority. Halfway through my explanation, I realized I was regurgitating half-understood concepts I’d read in passing. I stopped and said, “Actually, I’m not as informed on this as I’m pretending to be.” The relief was instant–and my friend’s respect seemed to increase, not decrease.

When my confidence is low, I simply say “I’m not sure” and refrain from speculating. This approach runs counter to what’s often rewarded in our society.

The Confidence Paradox #

Job interviews and dating situations tend to reward the ignorantly confident or even the arrogant. It’s simply human nature. Personally, I’m put off by people who speak with unwavering confidence about subjects they clearly know less about than they think. Yet many people are captivated by charm and confidence (hence the term “con artist,” where “con” is short for confidence).

Research in social psychology supports this observation. Studies have found that confidence is often mistaken for competence, even when that confidence is entirely unfounded¹. This “confidence heuristic” helps explain why overconfident people tend to rise to positions of influence despite their limitations.

The Hidden Benefits of Not Knowing #

For me, being less certain has had a few obvious benefits:

1. Better learning: When you acknowledge gaps in your knowledge, you create space to fill them.
2. Stronger relationships: People trust those who are honest about their limitations.
3. Reduced anxiety: The pressure to know everything is exhausting. Letting it go is liberating.
4. Better decisions: Recognizing what you don’t know leads to more careful thinking.
5. Continuous improvement: Those who believe they know everything stop growing.

Embracing Intellectual Humility #

I recognize that expressing uncertainty doesn’t always serve me well, particularly when trying to impress others. But I’d rather remain authentic than pretend to know more than I do. Admitting the limits of what I know usually leads to a better conversation, and it keeps me from slipping into that bluffing tone I hate hearing in other people.

The next time you’re tempted to speak with certainty about something you only partially understand, consider taking a breath and saying “I don’t know.” It can feel awkward at first. It still does for me sometimes. But I’d rather deal with that than keep pretending. Around the people I actually respect, saying less and being honest about what I don’t know tends to go over better anyway.