Combining Texts

Ideas for 'Abstract Objects: a Case Study', 'Letters' and 'On the Plurality of Worlds'

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7 ideas

7. Existence / A. Nature of Existence / 2. Types of Existence
There are only two kinds: sets, and possibilia (actual and possible particulars) [Lewis, by Oliver]
7. Existence / C. Structure of Existence / 5. Supervenience / a. Nature of supervenience
Supervenience concerns whether things could differ, so it is a modal notion [Lewis]
7. Existence / C. Structure of Existence / 7. Abstract/Concrete / a. Abstract/concrete
Concrete objects have few essential properties, but properties of abstractions are mostly essential [Yablo]
We are thought to know concreta a posteriori, and many abstracta a priori [Yablo]
7. Existence / D. Theories of Reality / 7. Fictionalism
Abstractions may well be verbal fictions, in which we ignore some features of an object [Lewis]
7. Existence / D. Theories of Reality / 10. Vagueness / d. Vagueness as linguistic
Vagueness is semantic indecision: we haven't settled quite what our words are meant to express [Lewis]
Whether or not France is hexagonal depends on your standards of precision [Lewis]