Originally Posted by: magicninjaIt's for the sake of using precise, exact, correct terminology when breaking down the theory behind the music. I know this probably isn't the perfect explaination but it's how I think it works. If I'm wrong Jolly, swap out my wrong words for the right ones. :D
More or less that's the point of some of these rules. They're meant for clarity and ease in interpretation of a piece of music, especially the rules about enharmonic chromatic passing tones.