This engaging, intriguing book was completely ruined for me by one footnote. (Think of a pin popping a balloon.)
The text mentions the Mormonism of Kim Peek (who was the inspiration for the Dustin Hoffman character in Rain Man), and in one short footnote, Kean makes about a half dozen major factual errors about Mormonism. (Seriously: the error-to-word ratio was astounding.) And, of course, this isn't really about one footnote: When you read something so hideously inaccurate about a topic you do know something about, you are then left wondering: How many hideous errors litter this book in the topics that I don't know as much about?
The publisher gave me a digital review copy of this book.