The revised and updated 2^nd edition of Jon Koomey's book Turning Numbers into Knowledge: Mastering the Art of Problem Solving has been released by Analytics Press.

The 2^nd edition includes a new chapter on data sharing web sites, an epilogue summarizing Koomey's experience debunking an urban legend, an expanded further reading section, numerous updates and improvements throughout, and a new foreword from John P. Holdren, Past President of the American Association for the Advancement of Science

Some of the book's chapters can be downloaded in PDF format, as described below.

• The front matter includes the table of contents, the foreword, and the preface (which contains an annotated chapter list).
• Chapter 4 describes the importance of peer review to the scientific process.
• Chapter 11 defines "critical thinking" and describes how that process can improve your analytical work.
• Chapter 28 describes the uses and limitations of models, both simple and complex.

You can send comments or questions to the author at jgkoomey@stanford.edu or http://www.koomey.com.