I didn't initially write a review, just that I really enjoyed it. It was funny, serious, sad and so good! I didn't initially give it 5⭐️ because sometimes the science left me feeling stupid 🤣 I thought it was too much, but actually it was needed to move on to the next part of the story. 2 weeks later and I'm still thinking about this book! It deserves a retrospective extra star because it was genuinely great, I'm off to see the movie tomorrow as It's still on my mind and I want to see my boy Rocky!! Excellent read.