alt Hacker NewsI'd say this is a problem with the seller's communication, not the use of the book. If the seller didn't specify that the book was marked up, I agree with your sentiment. The act of writing in a book and selling it isn't the issue, but setting false expectations to whoever you're selling it to is.
> and it's a shallow way of taking notes to begin with
Are we really going to speak down to how someone uses a bunch of paper bound together? That's how they wanted to use it, which is cool, it's just not how you like it.
My intention is less "talk down" and more "Socrates was right." Too much of note-taking is a ritualistic behavior that actually hinders understanding and retention. I think highlighting / circling / crossing out / etc is by far the worst, but margin notes are also bad.
It is very frustrating the number of people who say "it's their property, they can do whatever they want" and similar comments, all of which are missing the point. Yes. It is legal to write on your own property. I know thay. It's my opinion that they're doing something that is guaranteed to harm overall human knowledge: whoever purchases/inherits/digitzes the book has to deal with it. And it almost certainly harms their own understanding of the book.