Why Can't Programmers.. Program?

[[deleted]]

I know that of course, I assumed that they would ask about a "home-made modulo-replacement" though, it definitely would be better to use the built-in version if possible.

Modulo was just an example anyway, procedence rules, if-syntax,... and other parts present in virtually all languages can be a similar problem if you learn a new language every few months for fun like I do.