Ladder of Inference
The Ladder of Inference shows how we climb from raw data to action in a blink - selecting, interpreting and assuming on the way - which is how reasonable people reach opposite conclusions from the same facts.
Seven rungs climb from what you actually observed up to the action you finally took.
Reach for this when…
- Two people are certain of opposite things and both feel obviously right.
- A coachee has jumped to a conclusion about someone and is acting on it.
- You want to slow a heated conversation without dismissing anyone's view.
How to run it
- Name the action or conclusion someone has reached.
- Walk back down the ladder: what did they conclude, assume, and add in meaning?
- Get to the bottom rung - what was actually observable, before interpretation.
- Ask what other meanings the same data could carry.
- Climb back up together, testing each rung out loud.
A worked example
Situation. Wanjiru, a team lead in Nairobi, Kenya, was certain her quietest engineer, David, had checked out.
Applied. Climbing down the ladder, 'checked out' rested on a single observation, silence in stand-ups, with a stack of assumptions piled on top.
Result. A direct conversation found David was overloaded, not disengaged. The story had gone wrong at the second rung.
The catch
The ladder is easiest to climb down for other people and hardest for yourself - your own inferences feel like plain facts. It can also stall a team in endless second-guessing. Use it to test a stuck conclusion, not to audit every sentence.
The higher you are on the ladder, the more certain you feel and the less data you are actually holding.
Origin: Chris Argyris, popularised by Peter Senge in The Fifth Discipline