​This
book describes argumentative tools and strategies that can be used to guide
policy decisions under conditions of great uncertainty. Contributing authors
explore methods from philosophical analysis and in particular argumentation
analysis, showing how it can be used to systematize discussions about policy
issues involving great uncertainty.

The first part of the work explores
how to deal in a systematic way with decision-making when there may be plural
perspectives on the decision problem, along with unknown consequences of what
we do. Readers will see how argumentation tools can be used for prioritizing
among uncertain dangers, for determining how decisions should be framed, for
choosing a suitable time frame for a decision, and for systematically choosing
among different decision options. Case studies are presented in the
second part of the book, showing argumentation in practice in the areas of
climate geoengineering, water governance, synthetic biology, nuclear waste,and
financial markets. In one example, argumentation analysis is applied to
proposals to solve the climate problem with various technological manipulations
of the natural climate system, such as massive dispersion of reflective
aerosols into the stratosphere. Even after a thorough investigation of such a
proposal, doubt remains as to whether all the potential risks have been
identified. In such discussions, conventional risk analysis does not have much
to contribute since it presupposes that the risks have been identified, whereas
the argumentative approach to uncertainty management can be used to systematize
discussions.