1. I just realized that O.W.L. was supposed to mirror O level (and hence N.E.W.T./A level).
2. And that Slitherin comes from the word slither (duh).
3. What would you do if you had the most powerful weapon on earth? You break it into pieces and throw it away, Harry style. Jackass.
4. I have watched all Harry Potter movies and the same impression remains: “Oh, I remembered reading this part.”
5. I tried to find symbolism in Potter series and had a hard time to find any. Indeed, C. S. Lewis is the greatest living theologian ever!