He pared away procedural dross: Whatever used up time without advancing the project was banned—even visits from the customer. Finished drawings were not required; shop men were encouraged to work from sketches and when possible to develop parts directly on the airplane. Decisions, once made, would not be second-guessed; good enough was good enough. Meetings were limited to two or three essential participants. Initial flight tests would be conducted by the builders—not, as was usual at the time, by the customer’s pilots.

Quelle: A look at the design process of aviation innovator Clarence („Kelly“) Johnson – (37signals)