Rudder Control
Was it the Wright Bros who caused us pilots to have to learn to operate aircraft rudders in reverse? Did it come about because of the difficulty in crossing over the rudder control wires?
What other machine or vehicle turns/yaws the opposite way to the control input?
Now that we have all overcome our natural instincts for rudder control there is no going back.
Those of you who were riding a motor cycle when you learned to fly will appreciate the difficulty in conversion.