It's not about understanding the language, it's about how an element in the code can mean different things. Think how in Ruby you can get monkey patched behavio

It's not about understanding the language, it's about how an element in the code can mean different things. Think how in Ruby you can get monkey patched behaviour that overwrites a method name for some type, or even the init() function in Go, that someone mentioned in the sibling comments that gets executed at module load, so when you encounter state that should be a zero value, it's actually not. If as a developer reading the code, there's no way to know if the compiler injects some behaviour in or around the thing that you're looking at, that's magic.