This is nominally a book about Jerome Cardano but also winds up being a bit about quantum physics because Brooks is a physicist in addition to be an author. I really enjoyed another book he wrote, 13 Things That Don’t Make Sense. This book is a little more of a meander. It was great to learn about Cardano but Brooks is also in this book! Which was for a reason but it made the book a little weird, and not entirely non-fiction which is always a tough sell for me. Nonetheless I enjoyed it and learned things but might have liked it more without that conceit.