I had a teacher, at a seminar I took, that kept saying "We need to know what 'Done' looks like." He also was the first person that told me the old Swiss Army maxim: "If the map and the terrain disagree, believe the terrain." Words to live by, as a delivery-oriented software developer.
He also was the first person that told me the old Swiss Army maxim:
"If the map and the terrain disagree, believe the terrain."
Ah so that's why they keep accidentally invading Liechtenstein! /j