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Chapter 7 - Denying Premise 3

Warrant for P as Warrant for Q

Published online by Cambridge University Press:  04 May 2019

Marc Alspector-Kelly
Affiliation:
Western Michigan University
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Summary

I set aside the buck-passing argument for the next three chapters. WP requires an alternative source of warrant for Q when transmission fails. In this chapter I consider the proposal that S’s warrant for P itself suffices also as a warrant for Q. The advocate of this view must claim that S’s warrant for P so suffices only when transmission fails. For, otherwise, it will imply the untenable closure principle that S, warranted in believing P, has a warrant for Q whether or not she recognizes that P implies Q. But there is no obvious reason why S’s warrant for P would only warrant Q when transmission fails; typical putative reasons to think that S’s warrant for P suffices for Q apply whether or not she recognizes the inferential relation. Moreover, Q does not, on its own, ground any empirical prediction whatsoever, and certainly not B, S’s basis for believing P. In fact, ~Q does predict B. So, if anything, B supports ~Q. Moreover, direct appeal to B as warranting Q violates NIFN. So if NIFN demonstrates that transmission fails, it also demonstrates that S’s warrant for P itself does not suffice as a warrant for Q.
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Publisher: Cambridge University Press
Print publication year: 2019

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  • Denying Premise 3
  • Marc Alspector-Kelly, Western Michigan University
  • Book: Against Knowledge Closure
  • Online publication: 04 May 2019
  • Chapter DOI: https://doi.org/10.1017/9781108604093.007
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  • Denying Premise 3
  • Marc Alspector-Kelly, Western Michigan University
  • Book: Against Knowledge Closure
  • Online publication: 04 May 2019
  • Chapter DOI: https://doi.org/10.1017/9781108604093.007
Available formats
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  • Denying Premise 3
  • Marc Alspector-Kelly, Western Michigan University
  • Book: Against Knowledge Closure
  • Online publication: 04 May 2019
  • Chapter DOI: https://doi.org/10.1017/9781108604093.007
Available formats
×