closer tolerances

That means things last longer whilst working just as well. That's a superb view of engineering. It enables residual wealth to build up in a population, as they don't have to replace things so often. Forget the yank doctrine about economics, it's why they use so much packaging: nothing lasts over there. They actually tried selling razor blades over here that would only last three days. But good engineering only thrives and innovates behind a protective tariff barrier or import prohibitions. In kowtowing to a stupid idea (free trade) politicians are sending their populations into a type of hell.