What you realize the older you get is everything scales. You can't rely on simple theories to see the world. My father was highly oppressive to me for 20 years. African tribes genocide each other all the time, but they don't genocide nations across the ocean because it's beyond their scope. Bees genocide bees. And all the while, people will say "well whoever is at the top of the pyramid, they are the most to blame". And yet nothing ever changes. Because simple theories don't change determinism.
Really interesting video. I believe they said in the video the balls only last 10 years. So I guess they'll have to keep an eye on maintaining them over time.