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Even though most people agree that waterfall is not the most optimal process for software development, it's still very common to see specs being thrown over the fence from the domain experts to the business analysts, and the analysis documents over the fence to the designers and the design documents over the fence to the developers and the binaries over the fence to the testers and finally to the customers... Information is lost, feedback is at a minimum. All this leads to blame. (Interestingly, blame seems to go both ways over the fence.)

Instead of this blame-driven process, what I think we need is an approach where collaboration and feedback is at the very heart. In my experience this is a much, much better way of working. To me, DDD is very much about that, gathering the WHOLE team around the model and the ubiquitous language and the code. Collaboration and feedback. So powerful!