When someone is absolutely certain they are right, that certainty is often the most dangerous thing in the room.
Not the problem they are certain about. The certainty itself.
This is what psychologists call overconfidence bias, and it shows up everywhere. But where it does the most damage, quietly and consistently, is in education. Because educated people are more likely to hold positions of power and influence, and when overconfidence bias takes root in someone with real authority, the effects ripple outward in ways that are hard to trace back to the source.
I want to talk about how this plays out, why formal education can actually make the problem worse, and what it cost me personally when I encountered it early in my online business journey.
Higher education was designed, at its best, to teach people how to think. To examine evidence, weigh competing ideas, and arrive at conclusions that can be revised when new information arrives. But somewhere along the way, a lot of educational institutions shifted from teaching people how to think to teaching them what to think. And that shift matters enormously.
When a person spends years being told the right answers, and then receives credentials that signal they have mastered those right answers, something predictable happens. They stop questioning. Not because they are lazy or dishonest. But because the entire system has trained them to trust conclusions rather than question them. The credential becomes a substitute for ongoing curiosity.
This is overconfidence bias at its most institutional. And the people it affects most are not the ones who dropped out and figured things out the hard way. It tends to affect the people who did everything right, collected every qualification, and were rewarded at every step for having the correct answer.
So what happens when one of those people ends up in charge of something, or in front of an audience, or running a course that real people pay money to follow?
I can tell you exactly what happens, because I lived it.
In my early days of trying to learn online marketing, I got onto the email list of someone I will call Mr X. He had made a significant amount of money running Google Ads for a T-Shirt company, and he was teaching others how to replicate his results. He had the credibility, the audience, and the confidence that comes from genuine success.
I followed his instructions carefully. I set up my first campaign, listed 200 keywords, and watched what happened over the first week. The result was disappointing. Only one of those 200 keywords got any traffic at all. So I emailed him and explained exactly what had happened, laid it out clearly, and asked for guidance.
His reply was to attack me for only having one keyword.
He had not read my message. He had seen a number, assumed he knew the situation, and fired back without checking. When I told him I had 200 keywords and only one was receiving traffic, he responded as though I had told him I only had one keyword. The difference between those two statements is enormous, and he did not notice it because he was not really reading. He was reacting from a place of total certainty.
I unsubscribed and never contacted him again. And that experience set me back considerably, because I had trusted his authority and his confidence, and what I got in return was someone too certain of their own importance to actually help.
That is overconfidence bias in practice. Not theoretical, not abstract. Real and costly.
The research on this is worth understanding. Studies on overconfidence bias consistently show that people overestimate the accuracy of their own knowledge, particularly in fields where they have some experience. The Dunning-Kruger effect gets a lot of attention for the way it describes overconfidence in beginners, but the subtler and often more damaging form of overconfidence shows up in genuine experts. They know enough to feel certain, and that certainty closes the door on questions they should still be asking.
In educational settings, this creates a particular problem. A lecturer or course creator who has stopped questioning their own assumptions is not just wrong occasionally. They are wrong in a way that spreads, because students often have no frame of reference to push back. They are there to learn, and so they absorb what they are given, including the overconfidence.
The antidote is straightforward, even if it is not always comfortable. Question the statements. Actively look for opposing viewpoints. Find the people who disagree with the expert you are following, and spend genuine time with their arguments before you dismiss them. Do not wait for someone to change your mind. Go looking for reasons to update what you believe.
One thing worth remembering: repetition does not make something true. A wrong idea repeated loudly and often enough can feel like consensus, but frequency is not the same as accuracy. This is as true in online business as it is in any formal educational setting.
If you are building an income online, especially if you are later in life and starting from scratch, this matters practically. The gurus who sound most certain are not always the ones worth following. The best teachers I have encountered are the ones who say things like, this worked for me in this context, but your situation may differ, and here is how to think about it. That kind of intellectual humility is rare, and when you find it, hold onto it.
I built this site and everything on it with the intention of being that kind of teacher. Not the loudest voice in the room, but a useful one. Someone who will actually read your email before responding.
If this topic resonates with you, or if you have had your own experience with an overconfident guru who cost you time or money, I would genuinely like to hear about it. Come and find more of my thinking here:
