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Single Idea 1690
[filed under theme 10. Modality / A. Necessity / 3. Types of Necessity
]
Full Idea
There are two types of necessity, one according to nature and impulse, the other by force and contrary to impulse. A stone travels upwards and downwards from different necessities.
Gist of Idea
A stone travels upwards by a forced necessity, and downwards by natural necessity
Source
Aristotle (Posterior Analytics [c.327 BCE], 94b38)
Book Ref
Aristotle: 'Posterior Analytics (2nd ed)', ed/tr. Barnes,Jonathan [OUP 1993], p.61
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
|
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]
|
9442
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The only necessity is logical necessity
[Wittgenstein]
|
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]
|
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]
|
9205
|
The three basic types of necessity are metaphysical, natural and normative
[Fine,K]
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15079
|
'Conceptual' necessity is narrow logical necessity, true because of concepts and logical laws
[Lowe]
|
16533
|
Logical necessities, based on laws of logic, are a proper sub-class of metaphysical necessities
[Lowe]
|
8261
|
Maybe not-p is logically possible, but p is metaphysically necessary, so the latter is not absolute
[Hale]
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15080
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'Relative' necessity is just a logical consequence of some statements ('strong' if they are all true)
[Hale]
|
15081
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A strong necessity entails a weaker one, but not conversely; possibilities go the other way
[Hale]
|
13721
|
'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]
|
19288
|
Logical and metaphysical necessities differ in their vocabulary, and their underlying entities
[Hale]
|
19290
|
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]
|
9482
|
If the laws necessarily imply p, that doesn't give a new 'nomological' necessity
[Bird]
|
13244
|
Relevant necessity is always true for some situation (not all situations)
[Beall/Restall]
|
10933
|
Physical possibility is part of metaphysical possibility which is part of logical possibility
[Rami]
|
14703
|
Superficial necessity is true in all worlds; deep necessity is thus true, no matter which world is actual
[Schroeter]
|
14532
|
A distinctive type of necessity is found in logical consequence
[Rumfitt, by Hale/Hoffmann,A]
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