Ruler designer, but then again I don't think it matters.
Edit: Unless you're talking about rules. I say sure.
Yes, as in are we allowed to use it? I almost always play with it, because I don't want to get in game and realize my guy is incompetent at everything when I start. Mainly, I just want to make sure I start with lvl 4 education, so I don't just die due to rebels or some stupid thing.