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Degrees of commensurability and the repugnant conclusion

Hájek, Alan and Rabinowicz, Wlodek LU (2022) In Nous 56(4). p.897-919
Abstract

Two objects of valuation are said to be incommensurable if neither is better than the other, nor are they equally good. This negative, coarse-grained characterization fails to capture the nuanced structure of incommensurability. We argue that our evaluative resources are far richer than orthodoxy recognizes. We model value comparisons with the corresponding class of permissible preference orderings. Then, making use of our model, we introduce a potentially infinite set of degrees of approximation to better, worse, and equally good, which we interpret as degrees of commensurability. One payoff is the solution our approach provides to a paradox in population ethics, generated by Parfit's “Continuum Argument”. Parfit imagines a sequence of... (More)

Two objects of valuation are said to be incommensurable if neither is better than the other, nor are they equally good. This negative, coarse-grained characterization fails to capture the nuanced structure of incommensurability. We argue that our evaluative resources are far richer than orthodoxy recognizes. We model value comparisons with the corresponding class of permissible preference orderings. Then, making use of our model, we introduce a potentially infinite set of degrees of approximation to better, worse, and equally good, which we interpret as degrees of commensurability. One payoff is the solution our approach provides to a paradox in population ethics, generated by Parfit's “Continuum Argument”. Parfit imagines a sequence of populations, starting with one consisting of excellent lives and, by a sequence of apparent improvements, reaching a much larger population of lives barely worth living. What he dubs “the Repugnant Conclusion” is that the final population is better than the first. Developing Parfit's response, we argue that some of the populations in the sequence are merely almost better than their immediate predecessors. Almost better is not transitive (unlike better). We offer analogies to other ‘spectrum arguments’, Condorcet's paradox, and to developments in formal epistemology.

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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nous
volume
56
issue
4
pages
897 - 919
publisher
Wiley-Blackwell
external identifiers
  • scopus:85109081132
ISSN
0029-4624
DOI
10.1111/nous.12388
language
English
LU publication?
yes
id
8256dc02-05a6-4419-95ea-993420f6d797
date added to LUP
2021-08-13 14:20:58
date last changed
2023-01-16 10:14:44
@article{8256dc02-05a6-4419-95ea-993420f6d797,
  abstract     = {{<p>Two objects of valuation are said to be incommensurable if neither is better than the other, nor are they equally good. This negative, coarse-grained characterization fails to capture the nuanced structure of incommensurability. We argue that our evaluative resources are far richer than orthodoxy recognizes. We model value comparisons with the corresponding class of permissible preference orderings. Then, making use of our model, we introduce a potentially infinite set of degrees of approximation to better, worse, and equally good, which we interpret as degrees of commensurability. One payoff is the solution our approach provides to a paradox in population ethics, generated by Parfit's “Continuum Argument”. Parfit imagines a sequence of populations, starting with one consisting of excellent lives and, by a sequence of apparent improvements, reaching a much larger population of lives barely worth living. What he dubs “the Repugnant Conclusion” is that the final population is better than the first. Developing Parfit's response, we argue that some of the populations in the sequence are merely almost better than their immediate predecessors. Almost better is not transitive (unlike better). We offer analogies to other ‘spectrum arguments’, Condorcet's paradox, and to developments in formal epistemology.</p>}},
  author       = {{Hájek, Alan and Rabinowicz, Wlodek}},
  issn         = {{0029-4624}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{897--919}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Nous}},
  title        = {{Degrees of commensurability and the repugnant conclusion}},
  url          = {{http://dx.doi.org/10.1111/nous.12388}},
  doi          = {{10.1111/nous.12388}},
  volume       = {{56}},
  year         = {{2022}},
}