Overall, the book does a great job of covering the many areas of System Safety. It is the best book I've found on the topic.

However, this year I started teaching from this book. And when you teach you really discover the shortcomings of a text. It is frustrating when the author uses acronyms without explaination. I've also been running into minor math errors or oversights in formulas (e.g. defining a function f(x) and using 't' in the equation as the independent variable).

I think the attempt to cover all of the material resulted in a brief overview of these areas and took away from the quality of coverage. Still, I haven't seen a better book on the topic and if the worst you can say is that it could have been better, thats not bad.