Combining Texts
Ideas for
'Actions', 'On the Plurality of Worlds' and 'On Sufficient Reason'
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10 ideas
18. Thought / E. Abstraction / 1. Abstract Thought
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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
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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
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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
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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
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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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18. Thought / E. Abstraction / 8. Abstractionism Critique
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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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