My poor kids had such a hard time growing up. Fresh out of 9 years in the Navy, I became a programmer.
As tough as it was for them to figure out how I kept going past 12 o'clock to 13 o'clock, it got even worse when I counted: 8..9..A..B etc. :=) Somehow they got through it.
LOL
Been there... had a day when I was doing and inventory of hardware I could not figure out why my count was always off by one
.... Till I saw I was starting all might counts with zero!