Leslie had a brainwave. It was a remarkably simple solution to a problem. Science had discovered that red apples were healthier than green apples. The problem was how to stop people from eating green apples when they should be eating red apples.
Leslie’s solution took on throughout the world. Everyone chopped down their green-apple producing trees.
But there was a glitch. The occasional person kept the occasional green apple tree. It was usually a genuine case of mistaken apple-identity, rather than an intentional criminal act.
Governments came to the rescue. ALL apple trees were to be chopped down, and… Hurrah! It worked! There were no more green apples.