4577
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There is no necessity higher than natural necessity, and that is just regularity [Quine]
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Full Idea:
In principle I see no higher or more austere necessity than natural necessity; and in natural necessity, or our attribution of it, I see only Hume's regularities
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From:
Willard Quine (Necessary Truth [1963], p.76)
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A reaction:
Presumably this allows logical necessity as a 'lower' necessity, but denies 'metaphysical' necessity, in line with Hume and other tough empiricists. Personally I adore metaphysical necessities, but they are a bit hard to establish conclusively.
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11893
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Possibilities for Caesar must be based on some phase of the real Caesar [Mackie,P]
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Full Idea:
I take the 'overlap requirement' for Julius Caesar to be that, when considering how he might have been different, you have to take him as he actually was at some time in his existence, and consider possibilities consistent with that.
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From:
Penelope Mackie (How Things Might Have Been [2006], 6.5)
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A reaction:
This is quite a large claim (larger than Mackie thinks?), as it seems equally applicable to properties, states of affairs and propositions, as well as to individuals. Possibility that has no contact at all with actuality is beyond our comprehension.
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11884
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The theory of 'haecceitism' does not need commitment to individual haecceities [Mackie,P]
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Full Idea:
The theory that things have 'haecceities' must be sharply distinguished from the theory referred to as 'haecceitism', which says there may be differences in transworld identities that do not supervene on qualitative differences.
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From:
Penelope Mackie (How Things Might Have Been [2006], 2.2 n7)
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A reaction:
She says later [p,43 n] that it is possible to be a haecceitist without believing in individual haecceities, if (say) the transworld identities had no basis at all. Note that if 'thisness' is 'haecceity', then 'whatness' is 'quiddity'.
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