Agreed. Think of how ridiculous it would be to make a half-day task for figuring out X -- sometimes I've spent days, even weeks, trying to figure out how a modu

Agreed. Think of how ridiculous it would be to make a half-day task for figuring out X -- sometimes I've spent days, even weeks, trying to figure out how a module works. In practice, being able to break things down meaningfully and accurately to such a minute level implies that a lot of time was spent in grooming, which means we're just back to waterfall again. (Or the tasks at hand really are just that simple and/or the people involved have a lot of expertise.)