(Image credit: Getty Images) AI companies are reportedly buying up millions of books, some of which are rare, and using them to train AI models, often destroying the book in the process. And we now have more specifics about how this process works, thanks to an investigation from 404 Media. The outlet placed a tracking device inside a rare book that was part of a large, 1,000-book order — and it ended up in a Las Vegas Amazon warehouse.Employees who spoke to 404 Media said they spend their time a...