Compare modern Christianity's quest for the perfect belief system to medieval church architecture. Christians in the emerging culture may look back on our doctrinal structures (statements of faith, systematic theologies) as we look back on medieval cathedrals: possessing a real beauty that should be preserved, but now largely vacant, not inhabited or used much anymore, more tourist attraction than holy place.
Many of us can't imagine this.
If Christianity isn't the quest for (or defense of) the perfect belief system ("the church of the last detail"), then what's left? In the emerging culture, I believe it will be "Christianity as a way of life," or "Christianity as a path of spiritual formation."
The switch suggests a change in the questions people are asking. Instead of "How can I be right in my belief so I can go to heaven?" the new question seems to be, "How can we live life to the full so God's will is done on earth as it is in heaven?"