[elihu]

One definition of bad code is code that isn't even consistent with itself. I.e. you just tack stuff on when you know you really should go back and refactor some interface, but it's too much work so you just do the minimum you need to get some feature working, but the new stuff follows subtly different semantics, and you have to keep it all straight in your head. And then someone adds another layer on top of that, that's almost but not quite compatible with the other parts, and so on...