Old & fat, but strong; American, Chinese, & Indian (sort of); Ph.D. in C.S.; strategy, economics & stability theory; trees & machining.
The book assumes that you sort of know that the normal distribution is grossly overused in all kinds of science and pseudo-science. It explains in very easy to understand terms why this leads to a host of misunderstandings about the way the world really works. Examples include the recent sub-prime problems.
At some level this is something that serious students of mathematics have understood for a long time, but few are able to explain it this well and this systematically.
The style of the book will strike many who prefer more traditional prose as juvenile and narcissistic. But the brilliance of the book tends to overcome these annoyances.