"How many Harry Potter movies are there?" Jordan asks me from the back seat of the Wrangler as we drive around Easton. The question isn't surprising; she's just watched Chronicles of Narnia and has decided she's ready to watch the first Harry Potter movie.

"Well, there are seven books," I said, "but there are going to be eight movies, because they're splitting the last book into two films."

There's a pause, then Jordan says "Eight minus two is six."

This seems like a non-sequitur to me. Granted, she's doing math at preschool, but why that particular equation, and why now? I mean, I'd expect eight minus one equals seven, given the conversation, but why two?