Sooo… Big Upfront Design then. We already know why that didn’t work; nothing to do with the dev, this didn’t work because the users wants evolve and so code needs to be written to allow for flexible continuous improvement.

No I'm talking about after its already been slopped out. The whole article is centered around what do you do after a big slop mess has already been created. I'm presuming that a decent amount of user wants have been figured out at that point.