>That's my point you CANNOT possibly come up with the right smaller pieces until you have a solution that you have verified works. That's beside the point. The

>That's my point you CANNOT possibly come up with the right smaller pieces until you have a solution that you have verified works. That's beside the point. The point is that coding is not the only way to verification, especially at the architectural level. > I really don't understand why people want software to be different. It seems to be you who wants to be different. Making prototypes is expensive and time-consuming, so engineers try to look ahead to anticipate problems. Prototyping in software is cheaper, but not so cheap (especially at the architectural level) that thinking ahead isn't beneficial.