This note does not contain major spoilers for the book.

Non-fiction; which means that in my world spoilers are not possible.

This book is a deep look at Astounding magazine and people that made it happen, especially John W. Campbell.

Science Fiction has needed this book for a long time. We're finally getting mature scholarship about the "golden age". Coming just at the time when people are realizing the incompleteness of the goldenness of that age, this book has become a bit of a bone of contention. But for what it really is, not as a ploy in the current politics of SF, it is a superb book.