4.0

I enjoyed reading this book. I suspect i am a near doppleganger for the author, as many of the books and authors he cites as interesting i have read.
Certainly a great overview of the new arenas of information coming from collected data. I was impressed that he offered a chapter on the dangers and possible misuses of this approach in the book.
One of the criteria I use in the usefulness, or centralness, of a book to my interests is the number of books, articles and authors it inspires me to read. There were only a few new tangents to follow, more were gained from the notes and sources at the end of the book.
I recommend reading.