I speak passable Spanish, and have encountered the same "cultural dissonance" when dealing with a native speaker in a room full of non-native speakers. When you grow up embedded in a language and culture, you don't realize when you slip into colloquialisms and culture references that don't translate well.
That whole business deal the article opens with is a joke. It's not the native speaker's fault, nor the word's fault. It was the recipient who picked randomly when faced with an unclear choice. If you're unclear, as for clarification. I worked with an international collaboration of scientists during college and that was one of things you learned quickly. No one has the same frame of reference you do, so make sure you're all on the same page. Hell, simply rephrasing your understanding in a reply before you take action can clear this up in a single message. "So you wanted us to X? Got it!". Then the other party has the opportunity to step in and say, "No, do Y".