Chang, Ruth. Incommensurability, incomparability, and practical reason – Introduction
1997, Cambridge, MA.: Harvard University Press.
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Added by: Simon FoktBack 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.
Nussbaum, Martha, Rosalind Hursthouse. Plato on Commensurability and Desire
1984, Aristotelian Society Supplementary Volume 58: 55-96.
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Added by: Simon FoktDiversifying Syllabi: Plato’s belief in the commensurability of values (shared by modern utilitarians) ultimately “cuts very deep: taken seriously, it will transform our passions as well as our decision-making, giving emotions such as love, fear, grief, and hence the ethical problems that are connected with them, an altogether different character” (56). The upshot is that “certain proposals in ethics and social choice theory that present themselves as innocuous extensions of ordinary belief and practice could actually lead, followed and lived with severity and rigor, to the end of human life as we currently know it” (56).
Comment: The text is useful in teaching ethics, especially as a critique of utilitarianism. It can also be used as a reading in history of philosophy classes focusing on ancient ethics. It is rather long, but can be used in excerpts. The paper is largely reprinted in Nussbaum's Fragility of Goodness.
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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.