What is a real-world example of the curse of knowledge?

A common example is a teacher or expert who gives an explanation that skips several logical steps because those steps feel too obvious to state — leaving students lost even though every individual sentence was accurate. In reading, the clearest example is a book summary that jumps from a setup to a conclusion without the connecting argument, because the summary's author already sees the connection as self-evident.

Is the curse of knowledge the same as forgetting?

No. Forgetting is losing access to information you once had. The curse of knowledge is different: it is an inability to accurately simulate *not* having a piece of understanding, which distorts how you explain or record that understanding for someone (including your future self) who doesn't have it yet. You can suffer from the curse of knowledge about an idea you still remember perfectly well.

How do I stop the curse of knowledge from ruining my own notes?

You generally can't prevent it at the moment of writing, because the bias operates on you while you're inside the understanding it distorts. What works instead is a check applied afterward: testing yourself against the note later, rather than just rereading it, so a note that has become too compressed reveals itself through a failed retrieval attempt rather than staying silently useless.

Why do expert-written book summaries sometimes feel worse than amateur ones?

Because expertise is exactly the condition that produces the curse of knowledge. A summary written by someone with a deep, fluent model of the book is more likely to compress past the connective reasoning a first-time reader needs, unless the writer is deliberately working against that instinct and reinserting the steps that feel unnecessary to them personally.

Does this affect fiction as well as nonfiction?

Yes, though it shows up differently. A plot summary written by someone who already knows how the character arcs resolve will tend to state character motivations as settled facts rather than the gradually-revealed inferences they actually were on a first read — flattening the experience of piecing the story together, which is often a large part of what made the book work in the first place.

Curse of Knowledge: Why Book Notes Confuse You Later

The Curse of Knowledge: Why Your Own Book Notes Confuse You Later Quick Answer: The curse of knowledge is a cognitive bias where, once you understand something, you lose the ability to accurately imagine what it was like not to understand it. For readers, this shows up in two frustrating ways: professionally written book summaries (SparkNotes, CliffsNotes, and similar sites) are often written by people so fluent in the material that they compress past the point a first-time reader can follow, and your own highlights from months ago can feel like they were written by someone else, because the context that made them obvious at the time has quietly evaporated from your memory. The fix is not writing more detailed notes — it is testing yourself against your own notes soon enough, and often enough, that the gap never gets the chance to open. If you have ever reread a book summary and thought "I don't see how they got from A to B," or opened your own highlights from a book you read last spring and drawn a blank on why you'd marked a particular sentence, you have run into this bias directly. It is not a memory failure...