Did you know I had a book I didn’t have? Sounds complicated? Well, it’s actually not that complicated unless you choose to make it complicated. So, here’s the issue: A couple of months ago, I found a textbook in my mailbox. No idea who it belonged to or where it came from so I left it sitting in my mailbox, probably wishing it would just go away on its own. Of course it didn’t, since no one’s allowed to take anything from our mailboxes. So, after months of carefully watching the textbook, I decided to face the problem, and I took the book with me. But then I ended up having to books. So what do you do with a duplicate version of a textbook? I thought I’d better get rid of one of them. Then the other day, I get an email telling me, someone had found my textbook (mine, because they are all nicely numbered, a fact that had quite slipped my mind when I first took the mailbox textbook). So I quickly …