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Single Idea 17675
[filed under theme 14. Science / C. Induction / 5. Paradoxes of Induction / a. Grue problem
]
Full Idea
The predicate 'grue' involves essential reference to a particular time, which 'green' does not. Also on the 'grue' hypothesis a change occurs in emeralds in a way that change does not occur on the 'green' hypothesis.
Gist of Idea
Unlike 'green', the 'grue' predicate involves a time and a change
Source
David M. Armstrong (What is a Law of Nature? [1983], 04.5)
Book Ref
Armstrong,D.M.: 'What is a Law of Nature?' [CUP 1985], p.58
A Reaction
I'm inclined to think that comparing 'grue' with 'green' is a category mistake. 'Grue' is a behaviour. Armstrong says this is no objection, because Goodman's argument is purely formal.
The
20 ideas
with the same theme
[problem of a predicate which changes over time]:
18749
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Goodman argued that the confirmation relation can never be formalised
[Goodman, by Horsten/Pettigrew]
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17646
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Goodman showed that every sound inductive argument has an unsound one of the same form
[Goodman, by Putnam]
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17655
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Grue and green won't be in the same world, as that would block induction entirely
[Goodman]
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16933
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Grue is a puzzle because the notions of similarity and kind are dubious in science
[Quine]
|
17675
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Unlike 'green', the 'grue' predicate involves a time and a change
[Armstrong]
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17683
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Science suggests that the predicate 'grue' is not a genuine single universal
[Armstrong]
|
5485
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Emeralds are naturally green, and only an external force could turn them blue
[Ellis]
|
15887
|
'Grue' introduces a new causal hypothesis - that emeralds can change colour
[Harré]
|
15888
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The grue problem shows that natural kinds are central to science
[Harré]
|
15096
|
'Grue' only has causal features because of its relation to green
[Shoemaker]
|
8556
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Grueness is not, unlike green and blue, associated with causal potential
[Shoemaker]
|
9652
|
To just expect unexamined emeralds to be grue would be totally unreasonable
[Lewis]
|
4783
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Observing lots of green x can confirm 'all x are green' or 'all x are grue', where 'grue' is arbitrary
[Mautner, by PG]
|
3760
|
Predictions are bound to be arbitrary if they depend on the language used
[Bernecker/Dretske]
|
14989
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Problem predicates in induction don't reflect the structure of nature
[Sider]
|
14997
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Two applications of 'grue' do not guarantee a similarity between two things
[Sider]
|
6738
|
Any conclusion can be drawn from an induction, if we use grue-like predicates
[Bird]
|
6739
|
Several months of observing beech trees supports the deciduous and evergreen hypotheses
[Bird]
|
6799
|
We normally learn natural kinds from laws, but Goodman shows laws require prior natural kinds
[Bird]
|
7296
|
'Grue' is not a colour
[Milsted]
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