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272 pages, Hardcover
First published September 26, 2001
[MECE] says that when data from a category is desired to be broken into subcategories, the choice of subcategories should be
1. collectively exhaustive -- i.e., the set of all subcategories, taken together, should fully characterize the larger category of which the data are part ("no gaps")
2. mutually exclusive -- i.e., no subcategory should represent any other subcategory ("no overlaps")
This is desirable for the purpose of analysis: mutual exclusivity avoids the risk of double counting information, and collective exhaustion avoids the risk of overlooking information.