User Experience and Information Architecture – Centered and Bounded Sets | Wildly Appropriate | Visual Innovation | Scoop.it
The centered set approach is like gathering cats rather than herding cattle. The center is the pail of milk that draws the cats.

Going further: Finding where the interest/desire lies, which might seem like an overarching generalization yet is a constant for everyone, even if it's unspoken or taken for granted.

The blog post references Phyllis Tickle's "The Great Emergence".. (SIDEBAR: there's an interesting diagram related to The Great Emergence displayed as a combined Venn diagram and a Matrix on http://urbanmennoniteblog.com/church/fall-great-emergence/)
Via Mario K. Sakata