I'll admit that the puzzles that appear here are easy for me to pull together for your enjoyment: I don't make them up. They're the lazy girl's blog post. The low-hanging fruit. You'll see more of them when I'm busy. When I don't have time to do a proper post about (a) what I'm reading*, (b) atheism, (c) language, or (d) funny stuff, I'll give you a puzzle to hold your interest. I want you to stay with me!
So, without further ado:
You have a glass of water and a glass of wine. Both glasses contain the same volume of their respective liquids. Take a teaspoon of the water and add it to the wine, then take a teaspoon of the wine and add it to the water.
Question: Is there now more water in the wine glass or vice-versa? Can you give a simple explanation for your answer?
* Harry Potter book 7, I'm afraid. All of creation is reading this at present. My cousin told me of a recent spoken word performance she attended: the performer simply took a seat, paged to the end of the latest Harry Potter, and read the last 4 pages aloud. He was booed.