The two pieces of information co-occurred regularly. The co-occurrence produced a felt relationship that the base rates did not support.
When better-informed people find it extremely difficult to think about problems from the perspective of lesser-informed people.
A Scene Worth Recognising
When Maya set up her new Wi‑Fi router, she tried to help her grandfather get online. She told him to open a browser, type 192.168.1.1, log in with admin credentials, then navigate to the firmware update page and click ‘Apply’. Her grandfather stared at the screen, unsure what a browser was or where to find the address bar. Maya assumed he knew the basics because she used them daily, and she grew frustrated when he kept asking for clarification. Her detailed steps, while clear to her, skipped the simple explanations he needed, leaving him feeling overwhelmed and unable to follow along.
What it means and how it works
The bias stems from egocentric anchoring: when reasoning about another's mental state, people start from their own knowledge and insufficiently adjust for the other's lack of it. This insufficient adjustment leads to systematic overestimation of shared knowledge and underestimation of the inferential steps needed for comprehension.
The curse of knowledge is a cognitive bias whereby an individual's own knowledge interferes with their ability to reason about or communicate with others who lack that knowledge. Because the informed person cannot easily 'un-know' what they know, they tend to overestimate how much others understand, omit necessary background details, and produce explanations that are unclear or incomplete for novices.
Why it matters
The curse of knowledge undermines effective teaching, technical writing, user interface design, medical communication, and any context where experts must convey information to lay audiences. It can lead to misunderstandings, errors, reduced learning outcomes, and frustration for both communicators and recipients.
The verified research on this pattern supports the following:
- People who know a fact tend to overestimate the likelihood that others know it too.
- The curse of knowledge leads to less effective explanations because the explainer omits necessary background information.
- Providing explainer with feedback from naïve listeners reduces the curse of knowledge effect.
Common misunderstandings
Misunderstanding 1: The bias only affects experts or highly educated people.
Misunderstanding 2: It is simply a matter of arrogance or lack of effort.
Misunderstanding 3: Trying harder to be clear automatically eliminates the bias.
Sources
- Niroula, Rishab. REV 2.0 Topic Catalog. Hello to Halo.
- Kahneman, Daniel. Thinking, Fast and Slow. Farrar, Straus and Giroux, 2011.
- Taleb, Nassim Nicholas. The Black Swan: The Impact of the Highly Improbable. Random House, 2007.
- Tversky, Amos, and Daniel Kahneman. "Judgment Under Uncertainty: Heuristics and Biases." Science 185, no. 4157 (1974): 1124–1131.
The next time this pattern surfaces, the move is not to fight it — it is to notice it. Naming Curse of knowledge creates a moment of pause before the decision. That moment is usually enough.