But of course, that joke could just as well be, "There are 10 kinds of people, those who understand ternary, those who understand binary, and those who don't understand either":
https://pluralistic.net/2021/12/11/the-ten-types-of-people/
What's more, the joke could be, "there are 10 kinds of people, those who understand hexadecenary, those who understand pentadecenary, those who understand tetradecenary [*und so weiter*] those who understand ternary, those who understand binary, and those who don't."
12/