If you have the potential for 1% of risk, you have a lot of risk. So the only way you can burn down risk is to take a story to its completion, which means we have to have a clear definition of “done.” When you take an iteration to full completion, when it’s fully integrated, then you know you have no risk. Until then you have a question mark.
This concept is reminiscent of Schrödinger’s Cat.
The Austrian physicist Erwin Schrödinger proposed a sort of thought experiment to illustrate quantum mechanics. He imagined (but did not actually build, mind you) a box in which he’d place a cat, but in the box is a device that, should the cat either purposely or accidently activate, it would release some kind of poison. His assertion ...