> Such a methodology would ensure delivery, but not necessarily the contents of that delivery. But sometimes/often it doesn't matter that you delivered 70% by

> Such a methodology would ensure delivery, but not necessarily the contents of that delivery. But sometimes/often it doesn't matter that you delivered 70% by the agreed date, since less than say 90% is useless. We have an upcoming deadline. By a given date, some government system shuts off and another must be used. By then the customers must run functionality tests to prove their software handles the new system. If all of those tests don't pass it doesn't matter that we got most of them by the shutdown date. Customers won't get access to new system and their production halts, not acceptable. Scenarios like this is quite common for us.