It’s only fine until those sulfates react with water vapor in the atmosphere to form sulphuric acid. That stuff rains back down and contributes to ocean acidification which is causing serious harm to all sorts of marine ecosystems.

“And then it got worse.”

To be fair, that is a pretty funny prank.

“Oh, you wanted comedy? Here, have this harrowing tale about genocide and the great depths of human suffering instead!”

But how can set b contain all of the horses if they’re already in set a???