The author explains why some things catch on and others don't. I think if you liked the book Freakonomics you will like this. It has the same eclectic almost jumping around feel, but at the same time putting out very interesting information.
I'm not even done with the book, but I had to write the review. The lady narrating this book is totally wrong, if you have heard Brene Brown speak then you will be disappointed with the audio book. Its like everything she reads is a question which totally goes against the tone of the book.
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