Rage against the machine

OK time for a rant. I was reading the 2nd chapter of the George Barna's(Christian statistician and future forecaster) book Revolution. He is talking about a change in the church that is coming. I think this change is going to ROCK evangelicalism because it has set itself, a time and culturally bound manifestation of Christianity, as the last, best, and perfect understanding of Christianity. This false image, like that of an overly confident prize fighter, has set them up for a major fall. Our society has and is shifting from a Modern era built on certainty, 2 categories black and white, and authority figures to a Post-modern era built on humility, a multitude of gray categories, and freedom of thought & intellectual honesty. As this next generation finds its voice and its courage it will begin to more vocally question and, I believe discard, doctrinal statement type documents. Modernistic doctrinal statements sought to create clear boundaries to what must be believed to be considered a member, because knowing was king, drawing lines to delineate who was in and out was important, and faith was defined by cold hard facts. I believe Postmoderns will and do value being over knowing, accepting rather than excluding, and faith being defined more by blindly obedient actions than blind unthinking ascent.
Barna seems to attach the coming change with a shift away from corporate gatherings, which I think we have already seen (How many people do you work with who would consider themselves people of faith but have little need for church?). But I think this is only a symptom of the Postmodern shift and not the totality of it. Barna seems to see the change but to be unwilling to acknowledge the unpopular truth that to move into and embrace the future is to move away from and let go of the past.