@b0rk I’m looking forward to seeing how you break it down. I learned computers mostly at home with Dad’s help, so I had plenty of time to … I don’t know if there’s a name for it in general, but like how kids beginning to learn math will do things like try to see how high they can count, just as part of getting used to how numbers work, I did enough of that for numbers-on-computers that it seems natural to me. But I have an interest in teaching, so an interest in understanding the gap