That's a good point from @sanchez.mary about hydraulics being a game changer. It makes you wonder what "practical" really meant back then. Those early cable-operated machines were beasts that needed a whole crew just to steer and work the bucket. So maybe they were practical for huge, slow projects like canals, but not for everyday digging. The shift to hydraulic systems must have felt like going from a horse-drawn plow to a tractor. Do you know when that switch really started to happen for most digging work?