Start with two foundational tools
The Pyramid Principle organizes communication. MECE organizes analysis. Together they make reasoning easier to inspect and decisions easier to make.
01 · COMMUNICATION
The Pyramid Principle: Make Complex Ideas Clear
Use a project-delay case to turn scattered facts into a conclusion, grouped support, and a specific request.
Read the guide → 02 · ANALYSISThe MECE Principle: Break Problems Down Without Gaps
Use a sales-decline case to define boundaries, build an issue tree, and find overlap or omissions.
Read the guide →How they fit: MECE helps create clean groups; the Pyramid Principle turns those groups into a conclusion supported by clear reasoning.