Page 47 · Module 01, Think Like a Strategist · this screen continues that page
All 108 frameworksMECE Framework
Structure any problem so nothing overlaps and nothing is missed
The prompt
Copy & paste readyLabelsReplace theseSwap the role below
Pro tip, from the book
MECE is not just for analysis use it to structure any important communication. Before a board presentation or investor meeting, ask AI to check if your argument is MECE. Incomplete structure is the most common reason smart people fail to persuade.
Who should run this prompt
Module role profileWho should reason through this problem? The quality of your thinking is shaped by whose lens you borrow. A strategist and a risk analyst look at the same problem and see completely different things — both useful, both necessary. Before you prompt, choose who you need in the room. These profiles give you six internal perspectives and four outside views that challenge your assumptions before you commit to them.
Choose any role to drop it into the prompt above. Only the highlighted opening clause changes — the rest of the prompt stays exactly as printed.
◆◆◆◆◆ → ◆ seniority, board level down to specialist◈ outside the organisation
How to make any role sharper
- Add years of experience: "...with 15 years in enterprise SaaS" produces different depth than just the title.
- Add what they care most about: "You care most about [X]" shapes every word of the output.
- Add their communication style: "Be direct. Flag risks first. No jargon." changes the tone entirely.
Use this when
The problem it solvesYou're presenting an analysis, making a recommendation, or solving a complex problem and your thinking feels incomplete, repetitive, or hard to follow. You need a structure that is airtight.
How the framework works
From the printed pageMECE stands for Mutually Exclusive, Collectively Exhaustive. It is a McKinsey core thinking principle. Mutually Exclusive means every category is distinct, no overlap. Collectively Exhaustive means together the categories cover everything, no gaps. When your problem breakdown is MECE, your analysis is complete, your communication is clear, and your solution covers all the ground. AI can test whether your structure is MECE and help rebuild it if it isn't.
The method, in four moves
Do these in orderDefine the problem or decision you need to structure.
Ask AI to break it into MECE categories and check for overlaps or gaps.
Use the MECE structure as your analysis framework and your presentation outline.
Apply MECE to any situation where you need to be sure nothing is missed. Barbara Minto created MECE at McKinsey in the 1960s to solve a specific problem: consultant reports were being rejected because the logic had gaps or overlaps. She codified the principle that categories must not repeat (mutually exclusive) and together must cover everything (collectively exhaustive). It became the backbone of all McKinsey output and the standard for structured thinking in consulting globally. ORIGIN STORY
Where the framework comes from
McKinsey & Company — core consulting methodology, attributed to Barbara Minto, 1960s
Pairs well with
As printed with this frameworkModule 01 — Think Like a Strategist
Learn to work with AI. Then learn to think. Both are non-negotiable.
13 frameworks, printed on pages 22–47.
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