Tim -
I added that aside because I know there are golf holes I've played that I'd swear were pre-existing but that might've actually been shaped/created instead, at least in part.
[Also: I've read here Tom D talking about several of his golf holes that have always been considered completely natural/found, but only because no one has ever noticed-identified the shaping that had in fact been done.]
In short: I was talking both about golf holes that *are* wholly natural and golf holes so seamlessly blended into the site that they *appear* wholly natural. The results, for me in the playing, are the same.