Slowish on the progression, but the authors outline a well-formulated argument about how creativity works and why it propels society. The last third of the book is focused on how we can encourage it. I generally agreed with everything laid out in the book already, so it only really functions as a way to formalize my thoughts and give them a framework to operate in. It's easier to articulate having read this book, but I did not find it helping me question any of the things I already held to be true.