Only because we are still mildly connected to the subject of Taguchi: When I was out taking my morning walk, I gave a bit of thought to the question of his contribution to Japanese manufacturing dominance, and remembered how in the late 50's, early 60's their "trannies" were a technological marvel, but their quality control was a real joke. Even as an apprentice in the early 70's our instructors would deride Japanese quality control. At the same time, off the shelf Japanese bikes were starting to seriously out perform their British rivals. The thing is, this type of high performance engine tuning requires superb mastery of quality control.