content: Can Google read my thoughts? Hello, I'm new so I'm still learning my way around this website.  For a literature credit in school, I've read the book "When Hell Was In Session" . It's a biography of a Vietnam War POW. Anyways, that's not important, but on to the story. I finished the book last night. I NEVER ONCE looked up anything concerning the book or even the Vietnam war around the time of me reading it, and I've never had an interest in the topic. This afternoon, I opened YouTube, and the first thing in my recommendations is a video exactly about the book I read. It scared the shit out of me, since I never even talked about this book with anyone, so my conversations couldn't have been recorded. Does anyone have any ideas how this is possible, or was it a very odd coincidence? Thank you. I'm looking for serious replies only, please.