"A procedure in which repetition of a sequence of operations yields results successfully closer to a desired result."
When David Soucie figured out why a Boeing 737 fuselage section blew off, it triggered aviation changing from hours to cycles. The Army kept the annual 100 hours requirement but added the Aircrew Training Manuel with its iterations of various techniques.
I was privileged to fly three aviation jobs that provided opportunities for iterations, many iterations. They were Army aviation, Ag, and pipeline patrol. The POH is a good starting point for operations, but by definition does not produce results successively closer to the desired result. Like golf, the desired result (perfection) is not attainable. Default iterations of good technique, however, get us closer to the desired result.
This is not new to me. I grew up with a dad to whom finished did not mean I had moved the dirt or had gone over the ground. Finished meant there was no more before evening nautical twilight, no more light in the day.
