Ideas from 'An Analysis of Knowledge and Valuation' by C.I. Lewis [1946], by Theme Structure
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12. Knowledge Sources / E. Direct Knowledge / 4. Memory
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We rely on memory for empirical beliefs because they mutually support one another
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If we doubt memories we cannot assess our doubt, or what is being doubted
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13. Knowledge Criteria / B. Internal Justification / 4. Foundationalism / a. Foundationalism
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If anything is to be probable, then something must be certain
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13. Knowledge Criteria / B. Internal Justification / 5. Coherentism / b. Pro-coherentism
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Congruents assertions increase the probability of each individual assertion in the set
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18. Thought / C. Content / 8. Intension
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Extension is the class of things, intension is the correct definition of the thing, and intension determines extension
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