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Single Idea 15080
[filed under theme 10. Modality / A. Necessity / 3. Types of Necessity
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Full Idea
Necessity is 'relative' if a claim of φ-necessary that p just claims that it is a logical consequence of some statements Φ that p. We have a 'strong' version if we add that the statements in Φ are all true, and a 'weak' version if not.
Gist of Idea
'Relative' necessity is just a logical consequence of some statements ('strong' if they are all true)
Source
Bob Hale (Absolute Necessities [1996], 1)
Book Ref
-: 'Philosophical Perspectives' [-], p.94
A Reaction
I'm not sure about 'logical' consequence here. It may be necessary that a thing be a certain way in order to qualify for some category (which would be 'relative'), but that seems like 'sortal' necessity rather than logical.
The
26 ideas
with the same theme
[different ways in which things must be]:
1690
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A stone travels upwards by a forced necessity, and downwards by natural necessity
[Aristotle]
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21389
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Carneades distinguished logical from causal necessity, when talking of future events
[Long on Carneades]
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21362
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Necessity is physical, logical, mathematical or moral
[Schopenhauer, by Janaway]
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9442
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The only necessity is logical necessity
[Wittgenstein]
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13576
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Necessities are distinguished by their grounds, not their different modalities
[Ellis]
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6987
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We should not multiply senses of necessity beyond necessity
[Jackson]
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15291
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There is 'absolute' necessity (implied by all propositions) and 'relative' necessity (from what is given)
[Harré/Madden]
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16466
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Strong necessity is always true; weak necessity is cannot be false
[Stalnaker]
|
14680
|
Logical possibility contains metaphysical possibility, which contains nomological possibility
[Salmon,N]
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9205
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The three basic types of necessity are metaphysical, natural and normative
[Fine,K]
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15079
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'Conceptual' necessity is narrow logical necessity, true because of concepts and logical laws
[Lowe]
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16533
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Logical necessities, based on laws of logic, are a proper sub-class of metaphysical necessities
[Lowe]
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8261
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Maybe not-p is logically possible, but p is metaphysically necessary, so the latter is not absolute
[Hale]
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15081
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A strong necessity entails a weaker one, but not conversely; possibilities go the other way
[Hale]
|
15080
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'Relative' necessity is just a logical consequence of some statements ('strong' if they are all true)
[Hale]
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13721
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'Strong' necessity in all possible worlds; 'weak' necessity in the worlds where the relevant objects exist
[Sider]
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19286
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'Absolute necessity' is when there is no restriction on the things which necessitate p
[Hale]
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19288
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Logical and metaphysical necessities differ in their vocabulary, and their underlying entities
[Hale]
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19290
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Absolute necessities are necessarily necessary
[Hale]
|
7800
|
Analytic truths are divided into logically and conceptually necessary
[Girle]
|
4646
|
Is 'events have causes' analytic a priori, synthetic a posteriori, or synthetic a priori?
[Baggini /Fosl]
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9482
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If the laws necessarily imply p, that doesn't give a new 'nomological' necessity
[Bird]
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13244
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Relevant necessity is always true for some situation (not all situations)
[Beall/Restall]
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10933
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Physical possibility is part of metaphysical possibility which is part of logical possibility
[Rami]
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14703
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Superficial necessity is true in all worlds; deep necessity is thus true, no matter which world is actual
[Schroeter]
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14532
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A distinctive type of necessity is found in logical consequence
[Rumfitt, by Hale/Hoffmann,A]
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