I'm a nerd. I have a spreadsheet where I record the books in my library, when I read them, and a brief note on my thoughts. And I just added line 600. (That doesn't mean I own 600 books. There are a few in the spreadsheet that I have lost and never removed. Manga series are entered as a single book, because doing otherwise felt a little bit redundant, and coffee table books for some reason have never been added.) But still, cool! 🤓