Why We Argue Against The Truth
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Jul 15, 2026
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Halfway through an argument, I realized the evidence had already shifted against me. I could feel it happening in real time, and I kept talking anyway. I wasn’t trying to understand the issue anymore. I was trying to avoid the embarrassment of changing my mind in front of someone else. My mind had stopped investigating and started defending.
Upton Sinclair once said it is difficult to get a man to understand something when his salary depends on his not understanding it. Money is only one example. The same thing happens whenever the truth threatens something we can’t imagine losing.
Most people assume that kind of blindness happens to other people. They think of conspiracy theorists, reckless investors, politicians caught lying, or people trapped in obvious scams.
Many of the worst mistakes in judgment come from intelligent, thoughtful people protecting something they value—a career, a relationship, a reputation, or their place in a community.
Every act of self-deception begins as an attempt at self-protection.
None of us is immune to it.
Daniel Kahneman said “We can be blind to the obvious, and we are also blind to our blindness.”
These moments don’t feel like self-deception when they’re happening. They feel like good judgment.
1. When belonging is at stake
For most of history, being rejected by your group could mean losing protection, resources, even your life. That instinct hasn’t gone anywhere. It just took a different form.
Belonging isn’t the enemy here. Most of what any of us know, we learned by trusting a group before we had the standing to check it ourselves. That’s how civilization works. None of these instincts are flaws on their own. Trusting a group, staying loyal, and feeling confident are part of what holds a life together.
The problem begins when belonging decides what evidence you’re allowed to notice. Once that happens, you’re no longer looking for the truth. You’re looking for approval.
Solomon Asch
decades ago at Swarthmore College. Many participants knowingly gave incorrect answers simply because everyone else in the room had done so.
Jonathan Haidt goes argued that reasoning evolved largely to help us justify ourselves and persuade others rather than to discover the truth.
Belonging has a way of shaping judgment long before we realize it. One way to notice it is to imagine everyone around you believing the opposite.
2. When your identity is involved
Yale professor Dan Kahan runs the
. For years, his research has shown that people tend to evaluate evidence in ways that protect the values of the groups they identify with.
I noticed this after studying economics. The discipline gave me genuinely useful ways of thinking about incentives and human behavior. It also made it easier to dismiss ideas too quickly whenever they didn’t fit the way I’d learned to see the world.
Ideas should be easier to revise than identities. Once an opinion becomes part of your identity, your mind starts protecting it instead of questioning it.
3. When you’ve already invested too much
Imagine you’ve spent five years building a business that keeps losing money. Every month, you tell yourself things will soon turn around. Walking away would mean admitting those years might have been wasted.
I know what this feels like. Three years ago, I found myself stuck on a book project that wasn’t coming together. After months of trying to make it work, it became harder to admit I needed a different approach. I told myself quitting would waste everything I’d already put in. I wasn’t protecting the project. I was holding onto the story that all those months had to mean something.
Richard Thaler’s
framed this as the “sunk cost effect”: past investments distort present decisions even though that cost is already gone.
Charlie Munger saw the
from another angle. Once we’ve committed to a conclusion, he argued, we become surprisingly resistant to letting it go.
The past can’t be changed, but it doesn’t have to decide what you do next. A better question is what you’d choose if you were starting today with everything you now know.
4. When fear demands certainty
You can see this whenever markets crash, a new technology emerges, or a major crisis unfolds. People become less interested in careful answers and more drawn to confident ones.
Psychologist Arie Kruglanski calls this the
. It’s a desire for certainty strong enough to make a simple answer feel more satisfying than a careful one.
The moment you find yourself craving certainty more than understanding, slow down. That’s usually when a few more questions matter most.
5. When success convinces you that you’re always right
Success changes the questions we ask. Early on, we wonder what we’re missing. After enough success, we start thinking we’ve already seen it all.
After some of my articles unexpectedly reached tens of thousands of readers, I became convinced I understood exactly what readers wanted. Then a few articles I felt just as confident about went nowhere. I’d started running on the win instead of the work.
Former Intel CEO Andy Grove put it plainly in
: “Success breeds complacency. Complacency breeds failure.”
Success makes it easier to trust your judgment than to test it.
One way to guard against that is to keep questioning conclusions that have already worked. Past success can teach you a lot, but it doesn’t exempt your next decision from being wrong.
6. When someone you trust tells you what you hope is true
Stanley Milgram’s
at Yale in 1963 produced a surprising result. Ordinary people continued following an authority figure’s instructions even when they believed they were causing another person serious harm.
Robert Cialdini identifies authority as one of the
most powerful influences on human judgement
.
We naturally give more weight to people who appear knowledgeable, experienced, or credible, often before we’ve examined whether what they’re saying is actually true.
Whenever someone’s reputation starts doing the persuading, pause long enough to examine the claim on its own. Would it still make sense if you didn’t know who said it?
7. When the truth carries an emotional cost
You’ve replayed the same conversation in your head for months, yet every evening you find another reason to postpone it. Deep down, you already know what it might force you to admit that your own behavior contributed to problems you’ve been blaming entirely on someone else.
Like most people, I’ve postponed difficult conversations because I already knew where they’d lead. I told myself I needed more time, more information, a better moment. What I really lacked was the willingness to face what I already knew.
Jung wrote about this in Aion. Not the version that gets passed around
, but his actual argument. When you don’t make an inner conflict conscious, he wrote, it doesn’t go away. It shows up outside you instead, and you end up calling it fate.
I recognize that in myself. What I don’t examine doesn’t disappear. It just starts making my decisions for me.
Looking back, I don’t think ignorance is the biggest threat to good judgment. I think it’s loyalty—to our past decisions, the identity we’ve built, the people we love, and the stories we’ve been telling ourselves for years.
Those loyalties are part of what makes us human. They’re also what keep us explaining away evidence we would have accepted in any other situation.
The next time you catch yourself arguing a little harder than the evidence deserves, stop. Ask yourself: What became more important than getting this right?
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