[sopooneo]

My experience is that usually people haven't actually thought their ideas through. Not even the parts that are within their grasp to imagine and design. In trying to implement stuff, or just in preplanning discussions, you as the programming are always asking, "So what about here? What should happen in this case?" And then there's a pause making it clear the person has never considered this, then they throw out an answer like they had thought about it. But after a little while their answers start to contradict, and their idea is not even conceptually possible.