"A meticulously researched study . Oppenheimer et al. have produced what is essentially an assessment of assessments, and so its syntheses of insights across the case-study chapters add new knowledge even while they validate old knowledge that had formerly been largely anecdotal for most of us. This volume is therefore essential reading for participants of any large environmental assessment. Discerning Experts is not exactly the 'first' comparative study of multiple assessments, but it is an important one because of the extraordinary quality of its documentation and analysis as well as its clever creation of critical and instructive diversity across its three case studies. Natural and physical scientists will see how their work can be transmitted across humanity to help inform opinion about what is going on and perhaps what to do--on the basis of rigorous science. Perhaps, the largest value will be found among the young scholars who do their homework after being invited to participate in their first assessment. After they read this volume, they will understand what to expect and why their signing on is a valuable investment of their time.

".