The importance of cultural knowledge

I was looking through the headlines at BBC.com, as I often do, and I saw this headline, Husband charged over Pc's murder. I thought, "Gee, that's odd. Someone was charged because they killed a personal computer?" When I clicked on the article I quickly realized the error of my thinking. In the United Kingdom, a "Pc" is a police constable. It just goes to show that even if another country speaks the same language as you, they may not be speaking the same language as you. Cultural knowledge really is important.