After years of reading terrible books like Captain Underpants, Austin finally showed interest in starting the Harry Potter series. A few months ago, we began reading the first book, and we’ve progressively moved through the story. It’s a compelling one, with characters and themes that are far beyond those easily understandable by a 7-year-old. One of the magical creatures that appears in the series is a thestral. I had to actually look up the definition of this bat-like, horse-shaped creature online, and once I did I remembered that it was a special kind of supernatural being: the thestral is only visible to people who’ve seen someone die and accepted that…