How expertise creates a leadership communication blind spot—and three practical habits that help teams understand and act.
In 1990, Stanford graduate student Elizabeth Newton conducted a simple experiment. She paired people up. One person, the tapper, picked a well-known song like “Happy Birthday” and tapped out the rhythm on a table. The other person, the listener, tried to name the song.
Before the listeners guessed, Newton asked the tappers to predict how often they would succeed. The tappers estimated about half the time.
The actual result? Out of 120 songs, listeners named 3. That is 2.5 percent.
Why was the gap so wide? While tapping, each tapper heard the full melody playing in their own head. The listener heard only knuckles on a table. The tappers could hardly imagine hearing the song any other way.
Researchers call this the curse of knowledge: once you know something, it becomes difficult to remember what it felt like not to know it. In leadership communication, that blind spot can leave teams without the context they need to understand, decide, and act.
Why Expert Leaders Fall Into the Communication Gap
Here is a question worth exploring: why do even your most capable leaders fall into the communication gap?
Because they are competent. Their expertise is the very thing creating the blind spot.
A leader who has lived with a project for months hears the full melody every time she talks about it. The context, the history, and the reasoning behind each decision, all of it plays in her head. Her team hears the taps.
Think back to the department head from that first post, walking her team through a new process, dense with detail and short on framing. She was tapping. The marketing expert and his ICP from last week's post? Tapping. The two NASA teams, each certain their numbers spoke for themselves? Both tapping.
How the Curse of Knowledge Shows Up at Work
·Skipping steps that feel obvious to the speaker
·Using shorthand, the team has yet to learn
·Reading polite nods as understanding
·Measuring clarity by how the message sounds to the speaker rather than how it lands with the listener
How Leaders Can Overcome the Curse of Knowledge
Expertise keeps the blind spot in place, so the goal is to plan around it. My clients build three habits:
Start where your listener starts. Before a meeting, ask yourself: what does this group already know, and what is still playing only in my head?
Hum the melody first. Share the big picture, the why and the destination, before the details. Context turns taps into a song.
Ask for the song title. Invite people to say the message back in their own words. Their version reveals what landed and what stayed in your head.
Building Clearer Leadership Communication
Over the past month, this series has traced one pattern from several angles. The communication gap carries a real cost. A leader's words build or erode trust. Handoffs decide whether momentum carries forward. Jargon turns a clear message into a puzzle. And underneath all of it sits the blind spot that comes with expertise.
The encouraging part: every piece of this pattern is a skill, and skills grow stronger with practice. My clients discover that the moment they start hearing their message the way their listeners do, meetings shorten, decisions move, and teams act with confidence.
Where do you see the curse of knowledge affecting leadership communication? Which leader on your team hears the full melody while the room hears only taps? Reply and tell me where this blind spot shows up. I read every response, and your answers will shape what comes next.