A bit obvious,
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This review is from: Art of the Start, The (Hardcover)
I hesitate to say the legend that is GK is in any way mediocre or what he says obvious, but this book needed to be a bit deeper. Perhaps it just needs an update, 2004 seems a long time ago. It could be much shorter and still have the same content.
Check our Bill Aulet's book, Disciplined Entrepreneurship: 24 Steps to a Successful Startup which has come out of MIT's Sloan School. It came out in July 2013, and is very good.