"Extreme Programming projects do not try to produce a detailed requirements document and then freeze it. Instead, the Onsite Customer is actively encouraged to steer the project by changing his mind about what exactly it is that the team is supposed to deliver." (http://dustyvolumes.com/archives/605)
Agile programmers understand that business stakeholders will always have EmergentRequirements.
But have you noticed that your Burn Down Charts burn up for days, perhaps weeks before they peak and burn down?
Have you noticed that when one Emergent Requirement is identified within moments there's a run of issues and ideas?
You've got ErikTheVikingSyndrome.
Suddenly Erik notices Sven's father climbing aboard.ERIKWhat are YOU doing here?
SVEN'S DADYou may need a real Berserk.
SVENI AM one, Dad!
ERIKWe haven't got a spare place.
IVARHe can have my place. I don't want to go anyway.
ERIKWell, you ARE!
KEITELBjorn's not. He could have Bjorn's place.
ERIKWhat's the matter with Bjorn?
THORFINNNothing... Halfdan the Black chopped his hand off last night.
ERIKHE was lucky... (to Sven's dad) Sit there.
SNORRIYou can't have Sven's father sitting next to Sven. They'll argue the whole time.
ERIKThat's true. (to Sven) YOU'D better sit there. (to Sven's dad) You there, and Ornulf there.
SNORRINow you've got all the big ones on one side.
Erik looks around. It is true that all the tall burly ones are on oneside.ERIKAll right, you go there. You here...
Sven's dad and Ornulf swap places.SVEN'S DADOhh! I wanted to sit next to Leif.
ERIKShut up. You there. You there and you there.
Ivar and Ornulf swap places. Erik surveys this re-arrangement.ERIKThat's better.
SNORRINow you've got all the ones with beards on one side and all the moustaches on the other.
This is true. Erik thinks some moments and then:ERIKIt doesn't matter.
Nailed it! Right on the 'ead bruth'uh!