Communication

Pyramid Principle

Answer first, then grouped reasons, each backed by facts.

Last reviewed 28 September 2026

What does Pyramid Principle mean?

The Pyramid Principle, developed by Barbara Minto at McKinsey and set out in her book of the same name, is a way to structure writing and speaking: put the main answer at the top, support it with a few grouped arguments that are MECE, and support each argument with facts. It is the basis of top-down communication in consulting.

Where does it come up in case interview prep?

Three partner-style casesLesson in Final rounds and partner cases
The self-scoring rubricLesson in Thinking like the interviewer
Pyramid PrincipleFramework: how to use it in a case

Top-down communicationSay the answer first, then the reasons.
MECEBuckets that do not overlap and together cover everything.
SynthesisPulling the findings into a clear so-what and recommendation.
So-whatThe single most important takeaway from a fact or exhibit.

What does Pyramid Principle mean?

Where does it come up in case interview prep?

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