The waterfall method amounts to a pledge by all parties not to learn anything while doing the actual work.
Clay ShirkySociety doesn't need newspapers. What we need is journalism... When we shift our attention from โsave newspapersโ to โsave societyโ, the imperative changes from โpreserve the current institutionsโ to โdo whatever works.โ And what works today isnโt the same as what used to work.
Clay Shirky