"Anyway, this morning there were many times when Norwood and Meadows, and the Granger parents, Hermione and Harry all would start discussing some Muggle topic, and I had no idea what they were talking about. Lasers, for instance. I’m still not clear how a laser works, but a magical laser is a thin, red, bright line that comes out of someone’s wand, and this red line can cut through a wall."