In Robert Richards and Michael Ruse (ed.), The Cambridge Handbook of Evolutionary Ethics. Cambridge University Press (forthcoming)

Justin Clarke-Doane
Columbia University
I discuss the structure of genealogical debunking arguments. I argue that they undermine our mathematical beliefs if they undermine our moral beliefs. The contrary appearance stems from a confusion of arithmetic truths with (first-order) logical truths, or from a confusion of reliability with justification. I conclude with a discussion of the cogency of debunking arguments, in light of the above. Their cogency depends on whether information can undermine all of our beliefs of a kind, F, without giving us direct reason to doubt that our F-beliefs are modally secure.
Keywords debunking  modal security  Gilbert Harman  ethics  logic  math  indispensability  richard joyce  sharon street  evolution
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Philosophical Explanations.Robert Nozick - 1981 - Harvard University Press.
Two Dogmas of Empiricism.Willard V. O. Quine - 1951 - Philosophical Review 60 (1):20–43.
A Darwinian Dilemma for Realist Theories of Value.Sharon Street - 2006 - Philosophical Studies 127 (1):109-166.
Thinking How to Live.D. O. Brink - 2007 - Philosophical Review 116 (2):267-272.

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