Belief & ConfidenceBias #23

Curse of Knowledge

Once you know something, it is hard to imagine not knowing it.

A cognitive bias where experts or informed individuals struggle to communicate with those who lack their background knowledge, because they cannot easily take the perspective of a novice.

Why it matters: Studied extensively in economics, education, and design. Explains why experts often make terrible teachers.

Watch for

Explaining something and being surprised the other person does not "get it."

Try this

Test your explanation on someone with no background before assuming it is clear.

Real-world example

A professor gives a lecture full of jargon that is incomprehensible to first-year students.

Key researchers

Colin Camerer, George Loewenstein, Martin Weber

First described in 1989

Psychological mechanism

Inability to Mentally Simulate Ignorance. Once a piece of information is deeply integrated into your cognitive architecture, it becomes an automatic baseline. The brain cannot accurately delete its own data to view a problem from the perspective of a clean slate.

Seminal research

Colin Camerer, George Loewenstein, and Martin Weber (1989) in the Journal of Political Economy. Famously demonstrated by Elizabeth Newton's (1990) PhD dissertation where "tappers" guessed that "listeners" would easily identify famous songs tapped on a table 50% of the time, when the actual success rate was only 2.5%.