When I was 16, I bought myself a harmonica, went to the park, sat on a bench, and started playing it. I had never tried it before. Within an hour, I was able to do the tunes of “How Many Roads” by Bob Dylan. I was proud of myself.
Over the years, I learned to play the Piccolo, and various larger harmonicas. Sometimes when I am alone and pensive, I bring them out, and I reminisce while I play.
What I didn’t know that fateful day in the park was that I put it into my mouth upside down. This reversed the sides of the high and low notes, somewhat like reversing the keys on a piano. I didn’t realize I played backwards until many years later – way too late to switch. I still play upside down today.
I checked into the Hampton Inn in Albany, NY last night and observed the desk clerk using the mouse on the computer upside down. When I asked him about it, he said that when he bought his first computer he didn’t realize he had it backwards, and he can’t use it any other way now.
I tried this just now. Not only are the buttons reversed (since I use a PC and there are two, for you Mac-fiends), but the cursor moves in the opposite direction. Try it and see if you can control it meaningfully.