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Inverse View
It is not the case that One can support premises (2) and (3) by appealing to the principle that the probability of r given q is equal to one if and only if q entails r.
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Reasons For
2 perspectives
Reason for 1 of 2
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1.
Probabilistic entailment admits of degrees: Carnap's inductive logic shows P(r|q)=1 can hold without strict deductive entailment via confirmation theory.
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2.
If analytic probabilistic relationships suffice for P(r|q)=1, the biconditional conflates logical and epistemic probability, undermining Rowe's inference.
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Reason for 2 of 2
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1.
Plantinga's free will defense shows God-plus-background-knowledge may analytically exclude certain evils, making P(no-justifying-good|God)=1 without strict entailment.
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2.
If modal or analytic truths about omnipotence generate probability-1 claims non-deductively, the biconditional 'iff q entails r' is too restrictive a criterion.
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Reasons Against
1 perspective
Reason against
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1.
The existence of God is neither a logically necessary truth nor entailed by our background knowledge.
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2.
The existence of God together with our background knowledge does not logically entail that no good that we know of justifies an omnipotent, omniscient, perfectly good being in permitting E1 and E2.
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3.
The probability of r given q is equal to one if and only if q entails r.
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