Another example I love, that is even less ambiguous, is restaurants (traditional, not fast food) that require waiters to take orders on touchscreen PoS systems, instead of taking the orders on a notepad and inputting them later. The touch screens are incredibly slower on a bigger party ordering appetizers, a main course, drinks and desert - it takes forever to navigate back and forth and find the right item, and usually has to be done again and again for each diner. By comparison, a notepad allows the waiter to write down exactly what they hear, often just making small extra notes to indicate duplicate items.

Of course, this particular one could be improved by arranging the menus more naturally for someone taking orders, and several other conveniences (such as always keeping the current order on screen, to easily tap to add "oh, and another beer for me", "I'll have the same desert as her" etc).