@vicgrinberg@muellerwhh did you read the later books? I found each a slog (and the sexism in book 2 in particular is 🤢), but the core idea of book 2 is (I think) genius and original, and book 3 is just chock full of outstanding ideas that changed the way I look at the sky. My physics is only from popular physics books but I think I have the basics. (I also 🙄 at the quantum entanglement comms.)