The Gear shift on the Left and the Back button on iOS gets embedded in our memory and we can operate them without really having to look at them
When we use a Phone, touch or other, we get used to the physical actions within its environment, physical or digital, much like how we get used to the manual or auto shifts in a car. They are one and the same. Our mind remembers a position for a particular intended output in an environment and we try to hold on to it as much as possible. It is one of the main reasons why one should never switch the Back / Menu buttons on iPhone on the top Left with the Save / Done buttons on the top right. Any change will lead to a drop in its acceptance.