More like a 3.75, but I'm rounding up. Honestly, my eyes glazed over a little when Mark got into his descriptions of how he was fixing things. That said, I thought he was hilarious and really enjoyed the vast majority of this book. I kind of rushed the end because I NEEDED TO KNOW, so I think at some point I'll reread this and give myself more of a chance to think about it. So so excited to see the movie; I really believe this will be an amazing adaptation.