Abstract
In this paper I introduce a problem regarding whether there are good reasons to accept fallibilism about justified belief. According to this species of fallibilism, one can be justified in believing a proposition on the basis of reasons that do not justify certainty. Call such reasons “fallible reasons.” The problem is this: can one justifiably believe fallibilism on the basis of fallible reasons? To do so would seem to beg the question. If you are undecided as to whether you should accept anything on the basis of fallible reasons, then you should also be undecided as to whether you should accept fallibilism on the basis of such reasons. In this paper I consider several possible responses to this problem. I argue that the most appealing is to grant that good but fallible reasons on behalf of fallibilism are possible, and that this shows that one’s basic rational commitments cannot be defended in a non-circular fashion.
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Notes
Tienson (1974), Unger (1975), BonJour (2010), and Dodd (2011) defend infallibilism about knowledge. The contemporary discussion of fallibilism about knowledge has been primarily concerned with the question of whether the oddness of concessive knowledge attributions—claims of the form, “I know I will not die of a heart attack this week but I might be wrong,”—is best explained by infallibilism. See Stanley (2005), Dougherty and Rysiew (2009), and Dodd (2011).
Thanks to an anonymous referee for suggesting this possibility.
See Reed (2002) for an overview.
Again, see Reed (2002).
Turri (2009, p. 491) provides several examples.
For this standard presentation of the problem of induction, see Feldman (2003, pp. 130–140).
Is Hume’s problem of induction a problem for all non-deductive reasoning? If so, Hume’s worries about whether we can be justified in believing on the basis of inductive reasons would extend to worries about abductive reasons. This is a difficult issue. While it is plausible that inductive reasoning relies on the assumption that the future will resemble the past—or more generally, that unobserved cases will resemble observed cases—it is far from obvious that abductive reasoning relies on such an assumption. In addition, if Hume’s problem concerns all non-deductive reasoning, then attempts to provide an abductive vindication of induction such as the one provided by BonJour (1998, pp. 187–216) would be clear non-starters. But again, that is far from obvious.
See Goldman (1979).
I have defended these claims elsewhere. Specifically, in Alexander (2013) I have argued that if you justifiably withhold belief as to whether you are justified in believing P, then you are not justified in believing P. There is currently a healthy debate about these issues concerning the relation between higher-order justification and first-order justification. I cannot possibly do justice to them here. For further discussion see Christensen (2007b, 2010), Feldman (2005, 2009), Kelly (2005, 2010), and Lasonen-Aarnio (2010, 2014).
An anonymous referee raised two interesting questions about DB. First, what is the nature of the support relation? In particular, does accepting DB commit you to objective relations of support between evidence and propositions? DB is non-commital. You might hold that support involves some objective relation of entailment or making probable. But you might also hold a more subjective account. For example, you might hold that one’s evidence supports a proposition insofar as one believes that the evidence entails or makes probable that proposition. For further discussion, see Conee and Feldman (2008, pp. 94–98) and McCain (2014, pp. 56–83). Second, what relation does DB have to Lewis’s Principal Principle, according to which your degree of belief in P ought to match what you believe to be the objective chances of P being true? This is a complicated matter. If your belief regarding the chances of P being true is justified, then a proponent of DB will hold that this justified belief is part of your evidence, in which case your degree of belief in P should match your belief about the chances of P being true—assuming the absence of other evidence. But what if your belief regarding the chance of P being true is unjustified? In that case, it is less clear that the belief deserves to be considered part of your evidence. If so, a proponent of DB need not hold that your degree of belief in P ought to fit your belief about the chances of P being true, contrary to Lewis’s principle.
Note, however, that this is not to say that whenever one believes upon the basis of reasons, one must in fact consider those reasons good. Such a requirement would invite a regress. The proposed requirement is weaker. It is not that one should not believe on the basis of reasons that one does not consider good. Instead, one should not believe on the basis of reasons that one should not consider good. For additional defense of this claim, see Alexander (2012, 2013).
Thanks to an anonymous referee for raising this possibility.
For further defense of the fallibility of a priori justification, see BonJour (1998, pp. 110–115).
Beyond the fact that it involves an attitude towards a proposition, what is the nature of withheld belief? Like the complementary question about the nature of belief, this is a substantive question in its own right that I will not attempt to address here. For further defense of the claim that withholding belief is an attitude towards a proposition, see Friedman (2013).
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Acknowledgements
Versions of this paper were presented at Iowa State University, the University of Iowa and the annual meeting of the Iowa Philosophical Society. I would like to thank audience members at these events for their feedback. For additional discussion I would like to thank Stephen Biggs and Clark Wolf. Two anonymous referees provided extensive invaluable feedback on this paper—to both I am very grateful. Finally, thanks to Lucy for the long walks that generated the ideas that went into this paper.
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Alexander, D. Fallible reasons on behalf of fallibilism. Synthese 198, 3979–3998 (2021). https://doi.org/10.1007/s11229-017-1452-6
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DOI: https://doi.org/10.1007/s11229-017-1452-6