The one Golden Rule…
The one Golden Rule of Project Pigsty, is “finish what you started, and no new features…”. Fix bugs of course, but don’t add new features because that way you’ll never finish…
Today’s new feature…d
Anyway, today’s new feature is a slight bias towards larger stones lower down. A real stonemason would probably do this, and if you look at prototypical stone buildings, it’s probably stronger than I’ve added here so between you and me, I think I’ve got away with it.