Combining Texts

Ideas for 'Material Beings', 'Modal Logic as Metaphysics' and 'Getting Causes from Powers'

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10 ideas

10. Modality / A. Necessity / 1. Types of Modality
Dispositionality is the core modality, with possibility and necessity as its extreme cases [Mumford/Anjum]
     Full Idea: We think dispositionality is the core modality from which the other two standard modal operators draw their sense as being limiting cases on a spectrum. ...This gives a very this-worldly account of possibility and necessity.
     From: S.Mumford/R.Lill Anjum (Getting Causes from Powers [2011], 8.5)
     A reaction: I'm strongly in favour of this-worldly accounts of modal truths, so I like this. They take dispositions to hover somewhere between what is barely possible and what is absolutely necessary. But is modality actually part of the physical world?
Dispositions may suggest modality to us - as what might not have been, and what could have been [Mumford/Anjum]
     Full Idea: Dispositionality could be what gives us the idea of there being modality in the first place: that what is might not be, and what is not could be.
     From: S.Mumford/R.Lill Anjum (Getting Causes from Powers [2011], 8.5)
     A reaction: Compare Williamson's suggestion that counterfactual thinking is the source of such things, which is a similar thought. I take it to be exactly correct.
10. Modality / A. Necessity / 7. Natural Necessity
Relations are naturally necessary when they are generated by the essential mechanisms of the world [Mumford/Anjum]
     Full Idea: The relationship between co-existing properties or successive events or states is naturally necessary when they are understood by scientists to be related in fact by generative mechanisms, whose structures constitute the essential nature of things.
     From: S.Mumford/R.Lill Anjum (Getting Causes from Powers [2011], 7.3)
     A reaction: This is the view I espouse. It doesn't follow that those mechanisms have necessary existence. Given those mechanisms, they can only behave in that way, because behaving in some way is precisely what they are.
10. Modality / B. Possibility / 1. Possibility
Possibility might be non-contradiction, or recombinations of the actual, or truth in possible worlds [Mumford/Anjum]
     Full Idea: Possibility could be just logical possibility (as involving no formal contradictions), or recombinations of all the existing elements (Armstrong), or truth in other concrete worlds (Lewis).
     From: S.Mumford/R.Lill Anjum (Getting Causes from Powers [2011], 8.4)
     A reaction: All wrong, I would say. Well, avoiding contradiction is obviously a sense of 'possible'. Armstrong is wrong. It rules out new 'elements' being possible, and implies impossible combinations of the current ones. As for Lewis...
10. Modality / C. Sources of Modality / 1. Sources of Necessity
Maybe truths are necessitated by the facts which are their truthmakers [Mumford/Anjum]
     Full Idea: Some truthmaker theorists are truthmaker necessitarians, believing that the way facts in the world make certain propositions true is by necessitating them.
     From: S.Mumford/R.Lill Anjum (Getting Causes from Powers [2011], 3.10)
     A reaction: [The cite Armstrong 2007:5-6] I don't believe in this sort of proposition (which turns out, on close inspection, to be just another way of referring to 'the facts'). Propositions are our attempts to express facts, so they can't be necessitated.
10. Modality / C. Sources of Modality / 5. Modality from Actuality
Actuality proves possibility, but that doesn't explain how it is possible [Inwagen]
     Full Idea: A proof of actuality is a proof of possibility, but that does not invariably explain the possibility whose existence it demonstrates, for we may know that a certain thing is actual (and hence possible) but have no explanation of how it could be possible.
     From: Peter van Inwagen (Material Beings [1990], 12)
     A reaction: I like this, because my project is to see all of philosophy in terms of explanation rather than of description.
10. Modality / E. Possible worlds / 3. Transworld Objects / c. Counterparts
Counterparts reduce counterfactual identity to problems about similarity relations [Inwagen]
     Full Idea: Counterpart Theory essentially reduces all problems about counterfactual identity to problems about choosing appropriate similarity relations. That is, Counterpart Theory essentially eliminates problems of counterfactual identity as such.
     From: Peter van Inwagen (Material Beings [1990], 14)
10. Modality / E. Possible worlds / 3. Transworld Objects / e. Possible Objects
A merely possible object clearly isn't there, so that is a defective notion [Inwagen]
     Full Idea: The notion of a merely possible object is an even more defective notion than the notion of a borderline object; after all, a merely possible object is an object that definitely isn't there.
     From: Peter van Inwagen (Material Beings [1990], 19)
Merely possible objects must be consistent properties, or haecceities [Inwagen]
     Full Idea: Talk of merely possible objects may be redeemed in either maximally consistent sets of properties or in haecceities.
     From: Peter van Inwagen (Material Beings [1990], 19)
If talking donkeys are possible, something exists which could be a talking donkey [Williamson, by Cameron]
     Full Idea: Williamson's view on modality is that everything that could exist does exist: since there could exist a talking donkey there actually exists some thing that could be a talking donkey.
     From: report of Timothy Williamson (Modal Logic as Metaphysics [2013], n20) by Ross P. Cameron - Truthmaking for Presentists n20
     A reaction: Well that thing certainly isn't me, or Tim Williamson. I'm guessing that the thing is an actual donkey, probably a rather bright one. Actually, I think this is one of those views that invites the incredulous stare. (Barcan formulae).