>Waterfall in software was continuously changing those fundamental parts. You'd be fine tuning the irrigation and needed to destruct the whole bridge because so

>Waterfall in software was continuously changing those fundamental parts. You'd be fine tuning the irrigation and needed to destruct the whole bridge because some new requirements came up. Exactly this same thing also happens in non-software "waterfall" projects as well. Mid-project fundamental requirements changes which result in having to re-engineer large parts of the project. This is one of the reasons military acquisitions are so expensive, there's a huge problem with requirements changes.