“Controlled randomness” is, and I think most people would agree, an oxymoron. I agree that art is at its best when there’s a healthy mix of chaos and order, but is true randomness even possible? I think randomness is something that is inherently controlled to some extent, since there will always be certain parameters for everything we can conceive of. We are a species that operates on frameworks and pattern recognition, after all. I think we’ve coined the term “random” to describe outcomes for which we can’t see a clear logical process, and naturally, as the finer workings of the universe remain far out of our reach, most things in the world make little sense to us.
Talk to a quantum physics enthusiast and they might tell you that, on a quantum level, there exists some randomness in the way particles interact with one another. Likely, this is just a placeholder theory to explain away our confusion, but regardless, the universe seems to operate both on processes we can follow logically and processes that we can’t. In other words: chaos and order. Maybe that’s why people find so much beauty in “controlled randomness” – it mirrors the way we understand the world: nature, humanity, time, etc. Art mirrors life, after all.