Combining Philosophers
Ideas for Paul Bernays, David Lewis and Adam Cross
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19 ideas
18. Thought / A. Modes of Thought / 2. Propositional Attitudes
18416
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Attitudes involve properties (not propositions), and belief is self-ascribing the properties [Lewis, by Solomon]
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18. Thought / A. Modes of Thought / 4. Folk Psychology
3992
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Folk psychology makes good predictions, by associating mental states with causal roles [Lewis]
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18. Thought / A. Modes of Thought / 9. Indexical Thought
16390
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Lewis's popular centred worlds approach gives an attitude an index of world, subject and time [Lewis, by Recanati]
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18. Thought / B. Mechanics of Thought / 4. Language of Thought
3996
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Folk psychology doesn't say that there is a language of thought [Lewis]
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18. Thought / C. Content / 6. Broad Content
3997
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Nothing shows that all content is 'wide', or that wide content has logical priority [Lewis]
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3998
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If you don't share an external world with a brain-in-a-vat, then externalism says you don't share any beliefs [Lewis]
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3999
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A spontaneous duplicate of you would have your brain states but no experience, so externalism would deny him any beliefs [Lewis]
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4000
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Wide content derives from narrow content and relationships with external things [Lewis]
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18. Thought / E. Abstraction / 1. Abstract Thought
8901
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Abstraction is usually explained either by example, or conflation, or abstraction, or negatively [Lewis]
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18. Thought / E. Abstraction / 3. Abstracta by Ignoring
8904
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The Way of Abstraction says an incomplete description of a concrete entity is the complete abstraction [Lewis]
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18. Thought / E. Abstraction / 4. Abstracta by Example
8938
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The Way of Example compares donkeys and numbers, but what is the difference, and what are numbers? [Lewis]
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18. Thought / E. Abstraction / 6. Abstracta by Conflation
8903
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Abstracta can be causal: sets can be causes or effects; there can be universal effects; events may be sets [Lewis]
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8902
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If abstractions are non-spatial, then both sets and universals seem to have locations [Lewis]
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8905
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If universals or tropes are parts of things, then abstraction picks out those parts [Lewis]
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8906
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If we can abstract the extrinsic relations and features of objects, abstraction isn't universals or tropes [Lewis]
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18. Thought / E. Abstraction / 7. Abstracta by Equivalence
8907
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The abstract direction of a line is the equivalence class of it and all lines parallel to it [Lewis]
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8908
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For most sets, the concept of equivalence is too artificial to explain abstraction [Lewis]
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15443
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Mathematicians abstract by equivalence classes, but that doesn't turn a many into one [Lewis]
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18. Thought / E. Abstraction / 8. Abstractionism Critique
16289
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We can't account for an abstraction as 'from' something if the something doesn't exist [Lewis]
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