When I first saw this solution, I thought it was really clever, so I played with it, it broke, and I wondered why. I thought someone else might be in the same boat, so I took the time to try and explain it as best as I could. Part of understanding this solution is understanding when and when it doesn't work, which is important if someone ever wants to try and use this code in a different scenario. Some people will likely find this helpful, while others won't, and that's all right!