Review of Symbolic Logic 12 (1):62-96 (2019)

Nilanjan Das
University College London
Recently, several epistemologists have defended an attractive principle of epistemic rationality, which we shall call Ur-Prior Conditionalization. In this essay, I ask whether we can justify this principle by appealing to the epistemic goal of accuracy. I argue that any such accuracy-based argument will be in tension with Evidence Externalism, i.e., the view that agent's evidence may entail non-trivial propositions about the external world. This is because any such argument will crucially require the assumption that, independently of all empirical evidence, it is rational for an agent to be certain that her evidence will always include truths, and that she will always have perfect introspective access to her own evidence. This assumption is in tension with Evidence Externalism. I go on to suggest that even if we don't accept Evidence Externalism, the prospects for any accuracy-based justification for Ur-Prior Conditionalization are bleak.
Keywords accuracy  conditionalization  externalism
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DOI 10.1017/s1755020318000035
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References found in this work BETA

Attitudes de Dicto and de Se.David Lewis - 1979 - Philosophical Review 88 (4):513-543.
The Skeptic and the Dogmatist.James Pryor - 2000 - Noûs 34 (4):517–549.
Knowledge and its Limits.Timothy Williamson - 2000 - Tijdschrift Voor Filosofie 64 (1):200-201.
Warrant for Nothing (and Foundations for Free)?Crispin Wright - 2004 - Aristotelian Society Supplementary Volume 78 (1):167–212.

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Citations of this work BETA

Externalism and Exploitability.Nilanjan Das - 2022 - Philosophy and Phenomenological Research 104 (1):101-128.
The Value of Biased Information.Nilanjan Das - forthcoming - British Journal for the Philosophy of Science:axaa003.
Accurate Updating for the Risk Sensitive.Catrin Campbell-Moore & Bernhard Salow - 2020 - British Journal for the Philosophy of Science:axaa006.

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