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Ideas for 'Metaphysics', 'Does Ontology Rest on a Mistake?' and 'Truthmakers, Realism and Ontology'

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8 ideas

7. Existence / D. Theories of Reality / 2. Realism
Realism says a discourse is true or false, and some of it is true [Cameron]
     Full Idea: Realism about a discourse is 1) to think that the sentences are, when construed literally, literally true or false, and 2) to think that some of the sentences of the discourse are non-vacuously true.
     From: Ross P. Cameron (Truthmakers, Realism and Ontology [2008], 'Realism')
     A reaction: [Cameron adds 'non-vacuously' to an idea of Sayre-McCord 199 p.5] This is realism based on what is 'true', without specifying 'commitments', so I like it. Cameron says it makes mathematical postulationists into realists. He likes 'mind-independent'.
Realism says truths rest on mind-independent reality; truthmaking theories are about which features [Cameron]
     Full Idea: All that is necessary for realism, I claim, is that truth is grounded in mind-independent features of fundamental reality. Truthmaker theory comes into play because it is a theory about what those features are (…so it isn't a commitment to realism).
     From: Ross P. Cameron (Truthmakers, Realism and Ontology [2008], 'Realism')
     A reaction: [He cites Michael Devitt for this approach] What is the word 'fundamental' doing here? Because the mind-dependent parts of reality are considered non-fundamental? The no-true-Scotsman-hates-whisky move? His truthmaking is committed to 'things'.
For realists it is analytic that truths are grounded in the world [Cameron]
     Full Idea: The analytic commitment of realism is that truths are grounded in the world.
     From: Ross P. Cameron (Truthmakers, Realism and Ontology [2008], 'Grounding')
     A reaction: Certain fifth-level truths might be a long way from the actual world, and deeply interfused with human concepts and theories. Negative truths must be fitted into this picture.
7. Existence / D. Theories of Reality / 3. Reality
Knowledge of potential is universal and indefinite; of the actual it is definite and of individuals [Aristotle]
     Full Idea: Knowledge is a double thing, being both potential and actual. It is universal and indefinite and it is the potentiality of something that is universal and indefinite. But actuality is definite and of something definite, being the this-such of a this-such.
     From: Aristotle (Metaphysics [c.324 BCE], 1087a12)
     A reaction: Charlotte Witt identifies this as a key idea in 'Metaphysics', since the metaphysics is built on the epistemology, and this idea justifies the claim that Aristotle gives priority to particulars. I thoroughly approve. Not all knowledge is of the universal.
7. Existence / D. Theories of Reality / 6. Physicalism
Materialists cannot explain change [Aristotle, by Politis]
     Full Idea: Aristotle's main objection against the materialists (such as Thales and Anaximenes) is that they cannot explain why things change as they do.
     From: report of Aristotle (Metaphysics [c.324 BCE], 0988b23-) by Vassilis Politis - Aristotle and the Metaphysics 2.4
7. Existence / D. Theories of Reality / 7. Fictionalism
For me, fictions are internally true, without a significant internal or external truth-value [Yablo]
     Full Idea: A 'myth' or fiction for me is a true internal statement (a statement endorsed by the rules) whose external truth value is as may be, the point being that that truth value is from an internal standpoint quite irrelevant.
     From: Stephen Yablo (Does Ontology Rest on a Mistake? [1998], IX)
     A reaction: This contrasts with Carnap, for whom talk of 'ghosts' is false in an internal thing-framework. Yablo seems here to say a statement can be true while having no truth value. Presumably he is relaxing the internal rules.
Make-believe can help us to reason about facts and scientific procedures [Yablo]
     Full Idea: Make-believe games can make it easier to reason about facts, to systematize them, to visualize them, to spot connections with other facts, and to evaluate potential lines of research.
     From: Stephen Yablo (Does Ontology Rest on a Mistake? [1998], XI)
     A reaction: This is the key pragmatic defence of the fictionalist view of abstract objects. Fictions are devices to help us think better. I think a lot of ontology turns out that way.
'The clouds are angry' can only mean '...if one were attributing emotions to clouds' [Yablo]
     Full Idea: It is an open question whether the clouds that we call 'angry' are literally F, for any F other than 'such that it would be natural and proper to regard them as angry if one were going to attribute emotions to clouds'.
     From: Stephen Yablo (Does Ontology Rest on a Mistake? [1998], XII)
     A reaction: His point is that it is TRUE, in those circumstances, that the clouds are angry. Thus fictions are a valid and useful part of ordinary sensible course, giving real information. I like it.