Comment: In the introduction to the book Chang distinguishes between commensurability and comparability and argues that things can be compared and a choice can be made between them even if there is no single unit of value according to which they can be measured. The text is particularly useful in teaching introductory modules to value theory, especially on issues related to weighing conflicting values and to moral scepticism. Although very comprehensive, it is a challenging piece however.
Chang, Ruth. Incommensurability, incomparability, and practical reason – Introduction
1997, Cambridge, MA.: Harvard University Press.
Added by: Simon Fokt
Back matter: Can quite different values be rationally weighed against one another? Can the value of one thing always be ranked as greater than, equal to, or less than the value of something else? If the answer to these questions is no, then in what areas do we find commensurability and comparability unavailable? And what are the implications for moral and legal decision making? This book struggles with these questions, and arrives at distinctly different answers.
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