Like the Waterford crystal factory in Ireland (I lived in County Waterford for a while).
If you do the factory tour they show you people blowing glass, then you go to another room where you stand behind a rope curtain and watch half a dozen skilled workers painstakingly cutting the grooves into the crystal glasses by hand.
Then you kind of think... hold on, how many sets of glasses do they sell each day worldwide? And we're supposed to believe that 3 glass-blowers and 6 people with Dremels are supplying that...?