Abstract
Realism about the external world enjoys little philosophical support these days. I rectify this predicament by taking a relatively pragmatist line of thought to defend commonsense realism; I support commonsense realism through an interpretation and application of Donald Davidson’s notion of triangulation, the triangle composed of two communicators coordinating and correcting their responses with a shared causal stimulus. This argument is important because it has a crucial advantage over the often used abductive argument for realism. My argument avoids unwarranted conclusions, whereas the abductive argument is “inflationary” because it reaches beyond the limits of evidence for its realist conclusion. To illustrate the problems of the abductive argument and motivate my Davidsonian approach, I take a brief look at the abductive argument for realism in Frederick Will’s work.
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Notes
Putnam coins “Metaphysical Realism” in Putnam (1977).
I might have used Robert Brandom’s work in Brandom (1994) to frame my argument; indeed, Davidson and Brandom’s work are rather close on the issues of interpersonal (or I-Thou, as Brandom likes to say) interpretive relations and perceptual externalism, the issues that matter most to my argument. But where Davidson gives perceptual externalism a center place in his epistemology by making it integral to interpersonal communication, Brandom focuses on his inferential semantics and he includes perceptual externalism primarily as a means to fend off linguistic idealism. For Brandom, the external world acts only to constrain our inferences and commitments. Because I find that Davidson captures the significance of externalism within interpersonal communication better than Brandom, I use only Davidson’s work.
I distinguish my argument for realism from “deflationary” realism in that I find some metaphysical conclusions warranted whereas deflationary realists do not. I say more about this later against Hubert Dreyfus and Charles Spinosa’s analysis that Davidson’s work yields only deflationary realism (Dreyfus and Spinosa 1999).
I do not claim that my argument is the only plausible argument for commonsense realism, only that it does avoid inflation. Other plausible arguments for commonsense realism would have to do the same.
In the same vein, Nicholas Rescher recently remarks that the best argument for realism is our ignorance of the world rather than any knowledge we have of it. He writes, “What is perhaps the most effective impetus to realism lies in the limitations of human intellect, pivoting on the circumstances that we realize full well that our putative knowledge does not do full justice to the real truth of what reality is actually like” (Rescher 2005, 5).
Davidson shares this point with Tyler Burge’s perceptual externalism (Davidson 2001e, 200).
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Calvert-Minor, C. Commonsense Realism and Triangulation. Philosophia 37, 67–86 (2009). https://doi.org/10.1007/s11406-008-9160-6
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DOI: https://doi.org/10.1007/s11406-008-9160-6