In my career, I've worked for a lot of really good managers, and of course, Gene Kranz was one of the best. One of the things I really admired about Gene ... is that if things didn't work out quite right in a project or in a thing that you were doing, Gene would often say, "Well, maybe I didn't explain as clearly as I should have what it was I needed you to do."
- Mission Control Center ISS Project JSC
Without a clear and concise description of Done in units of measure meaningful to the decision maker (Effectiveness and Performance), it's hard to know how to reach Done, how much it'll cost to reach Done, and when Done will be arriving. This is the purpose of planning - to provide the map with the route, cost, and measures of progress along the way to Done, while assuring when we arrive at Done, the project deliverables implement the needed Capabilities of the system.
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