Hmm, good luck trying this with scrum: Planning meeting for sprint 23. "I think we're done." "How can we be done?" "All agreed-upon features have been implement

Hmm, good luck trying this with scrum: Planning meeting for sprint 23. "I think we're done." "How can we be done?" "All agreed-upon features have been implemented." "Aha, but this user story here, that I totally did not pull out of my backside tells a different story."