Curse of Knowledge: Why Experts Make the Worst Teachers

🎣 Hook

Your math teacher is standing at the board. They write something down, turn around, and say: "This is pretty straightforward."

You stare at the board. You stare at your notebook. You stare at the ceiling. You consider a career change. You're 16.

Straightforward. Sure.

Here's the thing: your teacher isn't lying. They genuinely think it's straightforward. Not because they're mean, or bad at teaching, or out of touch with reality. They think it's easy because they've known it for so long that they physically cannot remember what it felt like not to know it.

That's the Curse of Knowledge. And it's everywhere.

🧠 What Is It?

The Curse of Knowledge is a cognitive bias that happens when someone who knows something well finds it nearly impossible to imagine not knowing it.

Once you've learned something deeply — once it's automatic, wired in, obvious — you lose access to how confusing it was at the start. Your brain essentially overwrites the "beginner experience" with the "expert experience." The confusion disappears. The struggle fades. And you're left wondering why everyone isn't getting it.

It was first described in 1989 by economists Colin Camerer, George Loewenstein, and Martin Weber. They found that when people know information others don't, they systematically overestimate how easy it is to understand. The curse cuts in one direction: you can't un-know something you know.

This isn't about intelligence. It's about familiarity. Your teacher has explained quadratic equations hundreds of times. They've internalized it to the point where it's as obvious as tying shoelaces. And just like you can't really explain how you tie your shoelaces (try it — it's hard to describe), they can't fully explain their intuition about the math.

📱 Real Life (aka Your Life)

The tutorial creator problem: Ever watched a YouTube tutorial where the person goes from step 3 to step 9 and skips everything in between? And in the comments it's just: "where did x come from?? how did you get y??" The creator isn't trying to confuse you — they just can't see the gaps anymore. To them, those steps are obvious.

Group projects: You're really good at something — let's say graphic design — and you've been asked to handle the visuals. Your teammates ask you to explain what you're doing. You start talking about layers, color theory, bezier curves... and you can see their eyes glazing over. You think: how do they not know this? It's basic. The curse is on you now.

Explaining a meme to someone who doesn't get it: You explain the meme. The explanation takes 45 seconds and involves three pop culture references. The person still doesn't laugh. And you genuinely can't understand why, because to you it's obviously funny. Once you get a joke, you can't see it from the outside anymore.

Instructions written by developers: You've used an app or website with instructions that make no sense. "Simply navigate to the settings interface and configure the API authentication parameters." Simply! The person who wrote that has been working on this software for three years. They have forgotten what it's like to see it for the first time.

TikTok "basics" videos: Someone makes a video called "basic skincare routine for beginners" and then lists fourteen products in a specific order with chemical ingredients you need a chemistry degree to pronounce. They're not trying to overwhelm you. They genuinely think this is the simplified version.

🔍 How to Spot It

When someone else is cursed:

• They explain something and get frustrated when you don't immediately follow
• They skip steps because they seem "obvious"
• They use jargon without noticing or defining it
• They say things like "it's simple," "basically," or "you just..." before explaining something that is definitely not simple

When you are the curse:

This is the harder one. Signs you're afflicted:

• You're explaining something and you keep saying "obviously" or "as you know"
• You feel mildly surprised that people are confused by your explanation
• You're struggling to remember what the hard part of learning this was
• Your instructions make sense to you but not to anyone else

The fix:

The antidote is called the beginner's mind — deliberately trying to remember or re-experience what it was like to not know something. Good teachers do this constantly. They don't just know the subject; they know the confusion map — where people get stuck, what seems unclear, which step trips everyone up.

One technique: explain the thing to someone with zero background. When they stop understanding, you've found your gaps.

🎯 Your Challenge

Think of something you're genuinely good at — a skill, a subject, a game, anything.

Now try to teach it to someone who knows nothing about it. A younger sibling, a parent, a friend who's never tried it.

Rules:

• No jargon. If a technical word slips out, you have to explain that too.
• Go as slow as they need, not as slow as you think they need.
• When they look confused, don't say "wait, really?" — just go back a step.

After the conversation: where did they get confused? What did you accidentally skip? What felt obvious to you but wasn't to them?

Write it down. That's your personal curse-of-knowledge map. Every expert has one. Most of them just never look at it.

Part of the TellDear Teen Series — Critical Thinking for the Real World