Honestly I would make a strong generalisation here that in matters of dexterity, small changes are profound. The "jump" in phone size from the iPhone 5 to the

Honestly I would make a strong generalisation here that in matters of dexterity, small changes are profound. The "jump" in phone size from the iPhone 5 to the 6 was extremely jarring (and the 12 mini) to me, despite being "only a little bit larger" than the 5. I think our hands are so used to fine motor movement that small changes can have substantial effects. See also: the entire mechanical keyboard industry.