Even this is ambiguous though, or at least, I didn't get it when reading the headline in the article either. Smoke signals just don't even come to mind when som

Even this is ambiguous though, or at least, I didn't get it when reading the headline in the article either. Smoke signals just don't even come to mind when someone says signal, it's like having to think of network cable when someone says "dog strangled by cat", to me at least!