See, I remember back in my law school days—where they do teach plain English there now—and in the first year we were told that historically drafters were paid per word. It's how we ended up with many long, convoluted, and complex pieces of law that somebody in the street just can't understand without legal training or help. It's how we ended up with phrases like "null and void" and "common practice". Both words mean the same thing, either one would do, but why use just one when you could get paid for two!