You’re sitting in a meeting. Someone is explaining something complicated. The words sound right, the sentences follow a clear structure, and at the end you nod. Everyone nods. It makes sense.
Later, alone, you try to reconstruct what exactly you understood. And you notice: nothing. You’d heard words. You’d nodded too. But the thing itself is gone, as though it had never been there.
The unsettling part isn’t that you didn’t understand. The unsettling part is that you didn’t notice at the time.
* * *
For years now we’ve talked about fake news. About disinformation. About lies that travel faster online than the truth. The problem is real, and others have written about it at length.
But fake news triggers something. Eventually someone checks the fact, eventually a newspaper runs the correction, eventually somebody sends you a link showing the story doesn’t hold. The mechanism isn’t perfect — plenty still gets through — but it exists. Contradiction is possible because a lie is recognisable as a lie the moment someone looks closely.
Alongside it sits a phenomenon that sets off no alarm. It invites no fact-check, because nothing about it is demonstrably false.
I call it sham understanding.
Sham understanding is the feeling of having understood something without actually having understood it. The nod in the meeting. That small internal ah, now I get it after a fluent explanation. You consider yourself informed when in fact you’ve only consumed information.
And here’s the uncomfortable part: it feels exactly like real understanding.
* * *
From the inside, no alarm sounds. “I understood that” and “it felt as though I understood that” are barely distinguishable.
The difference sits elsewhere, and it can be stated precisely. Real understanding means you can predict what a thing will do, and explain why. And that you notice when your reasoning doesn’t hold. Real understanding gives you the capacity to act.
The feeling of understanding needs none of that. It needs a surface you can read off, and the absence of friction. When an explanation sounds smooth, when it raises no questions, when it snags nowhere, it feels like understanding.
As long as nobody asks, as long as you don’t have to apply anything, as long as the matter runs quietly in the background, the illusion stays intact. Until the moment someone says: explain that to me briefly. And you stall.
* * *
Why does this go unnoticed for so long?
Because fake news is falsifiable and sham understanding is private. It produces no contradiction, only satisfaction. The feeling lives inside you, and nobody has access to it but you.
You are precisely the person who won’t notice.
This isn’t an individual defect. Evolution doesn’t optimise for truth, it optimises for survival, and for survival a workable sense of competence was more useful than an accurate one. Most of the time that’s enough. But most of the time isn’t always.
Media literacy, fact-checking, critical reading — all of it works on recognisable lies. On sham understanding it doesn’t. The words were correct, the explanation was plausible. The only thing missing was your understanding.
Your feeling is not a reliable indicator. You need other tests. Can you explain it? Can you apply it? Can you predict what happens if one condition changes?
* * *
There’s a limit here that has come to matter more to me than the finding itself.
These tests cost time and concentration, and both are unevenly distributed. Someone under pressure, tired, doing three things at once, doesn’t have the attention this kind of checking demands. Someone signing a mortgage whose terms nobody explained to them gets nothing from a self-test — least of all the option to say no.
The questions help you. They don’t help the person who gets the bill. What helps them are rules that take effect before anyone has understood anything.
So the question isn’t whether you sham-understand. You do, several times a day. The question is where it has consequences — and who bears them, if not you.
* * *
The full essay on this topic:
