[JustSomeNobody]

I always advocate building up a walking skeleton of the system because only then does the architecture begin to emerge. I want to see how the data moves through the system to handle the core functionality; the actual goal of the system. I've sat in too long meetings where someone with their architect hat on spends hours going over this wonderful architecture for Core System Rewrite(tm) and not one time ever mentions the actual CORE functionality the system is trying to model. It's all gibberish about layers and entities and buses, etc. We're building a tire inflater, you have not one time mentioned how it actually inflates tires!