[Netjet!]

Originally Posted by Emithith

I'm a bit surprised there isn't a definite, non-negotiable rule for difficulty, like if the nps is higher than a certain amount, or if the notes ÷ song length is high enough it's automatically a ____.

There are too many factors to be able to make a definite song "equation" for difficulty placement. It would be VERY useful if we did have one, but there are simply too many things that play into what difficulty a song is. If you can somehow figure out a way to incorporate everything into an equation, or something along those lines, that will let us decide the difficulty of a song, go ahead.