"Without a ruler to do it against, you can’t make crooked straight." — Seneca
song in my head—”Real World” by Matchbox Twenty
We would all do better in the wilderness with a guide, someone to show us the lay of the land—where not to go, what areas are good to explore, etc. And I don't think it limits our experiences to have boundaries of a sort.
Guides don't have to be "rulers," per se, though there are aspects of life that should inspire stricter order. For the purposes of the artist, I think the best guides leave some wiggle room, some space for improvisation and exploration. I don't think a healthy aim for life (or our work) is to plan on making one perfect, impossible shot after another. That's not realistic. Instead, think of guides as goalposts in football. The kicker has a range in which to score points. It doesn't matter if the ball goes straight down the center or barely eeks in. The points still count either way.