Details
- Full Name
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MECE (Mutually Exclusive, Collectively Exhaustive)
- Mutually Exclusive
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Categories have no overlap - each item belongs to exactly one category
- Collectively Exhaustive
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Categories cover all possibilities - nothing is left out
- Framework for organization
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Systematic approach to structuring information and problems
- Prevents duplication
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Mutual exclusivity ensures no redundant coverage
- Prevents gaps
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Collective exhaustiveness ensures complete coverage
- Clear boundaries
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Unambiguous categorization with well-defined criteria
- Hierarchical application
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Can be applied recursively at multiple levels
- Validation approach
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Check both dimensions independently (exclusivity and exhaustiveness)
- Key Proponent
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Barbara Minto (McKinsey & Company, late 1960s)
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Problem decomposition and analysis
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Software architecture and component design
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Module boundary definition to avoid overlapping responsibilities
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Requirements organization and breakdown
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API endpoint structure and design
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Decision tree construction
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Issue tree development
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Organizing complex information
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System design and modular architecture
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Foundational to the Pyramid Principle
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Supports Single Responsibility Principle
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Enables Separation of Concerns
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Used in logic trees and issue trees