Bounded Set versus Centred Set

I was watching one of Michael Frost's talks on a video last night. He talks about the differences betweeen centred set and bounded set, which I found very interesting.

He said, "in the bounded set, it is clear who is in and who is out (fences, not wells), based on a well-defined ideological-cultural boundary --usually moral and cultural codes as well as creedal definitions.. but it doesn't have much of a core definition beyond these boundaries. It is hard at the edges, soft at the center."

The centered set, on the other hand, "is like the Outback ranche with the wellspring at its center. It has very strong ideology at the center but no boundaries. It is hard at the center, soft at the edges. We suggest that in the centered set lies a real clue to the structuring of missional communities in the emerging culture.

"The traditional church makes it quite difficult for people to negotiate its maze of cultural, theological, and social barriers in order to get "in.".. and by the time newcomers have scaled the fences built around the church, they are so socialized as churchgoers that they are not likely to be able to maintain their connection with the social groupings they came from...

"We propose a better and more biblical way.. is to ... sink wells. If you sustain your connection with the water sources, you will find a whole host of people relating to Jesus from different walks of life. We allow people to come to Jesus from any direction and from any distance. The Person of Jesus stands.. at the center."

Frost's conclusion is this: cultivate hunger, and provide the right kind of food and people will continue to relate to the center.

I found this concept very meaningful. What do you think?