...and they'd likely be equally lost if you started explaining the difference between splitting gears with a Road Ranger 13 speed versus simply selecting high/low range with the 9 or 10 speed, and why you don't push the clutch all the way in to shift unless you're at a complete stop (or you just want to destroy the clutch brake).
Oh yeah, and very few people really understand the relationship between "spring brakes" and "air brakes" and the two way air valve that releases the brakes (from spring pressure) and then directs air to operate them when needed. It's amazing how we can feel totally lost in some areas and assume what we know is just common knowledge when it would be totally baffling to others.