Single premise deduction and risk

Philosophical Studies 141 (2):157 - 173 (2008)
It is tempting to think that multi premise closure creates a special class of paradoxes having to do with the accumulation of risks, and that these paradoxes could be escaped by rejecting the principle, while still retaining single premise closure. I argue that single premise deduction is also susceptible to risks. I show that what I take to be the strongest argument for rejecting multi premise closure is also an argument for rejecting single premise closure. Because of the symmetry between the principles, they come as a package: either both will have to be rejected or both will have to be revised.
Keywords closure  knowledge  deduction  risk  paradox  transfer of warrant  inference
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DOI 10.2307/27734324
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PhilPapers Archive Maria Lasonen-Aarnio, Single premise deduction and risk
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References found in this work BETA
David Lewis (1996). Elusive Knowledge. Australasian Journal of Philosophy 74 (4):549 – 567.

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