“A MECE breakdown takes something – say, customers – and segments them into a series of categories that do not overlap, but together cover everything. Customers might be divided into “paying customers” and “non paying customers“
I’m most of the way through Team of Teams: New Rules of Engagement for a Complex World by General Stanley McChrystal. The book has a nice analysis of Mutually Exclusive and Collectively Exhaustive (MECE) diagrams in the chapter “Team of Teams”.
“It is a tidy and effective way to organize categories. But it is not always an effect way to organize people… horizontal anti-MECE bonds of trust and overlapping definitions of purpose enable them to ‘do the right thing’…Great Teams are less like ‘awesome machines’ than awesome organisms”