In Europe, the surname of Niklaus Wirth (inventor of the Pascal programming language) is pronounced “veert”; in the United States, it’s pronounced “worth.“
Thus, in Europe, he’s called by name; in the US he’s called by value.
Whereas Europeans generally pronounce his name the right way ('Nick-louse Veert'), Americans invariably mangle it into 'Nickel's Worth.' This is to say that Europeans call him by name, but Americans call him by value.
Thus, in Europe, he’s called by name; in the US he’s called by value.