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Single Idea 9119
[filed under theme 5. Theory of Logic / D. Assumptions for Logic / 1. Bivalence
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Full Idea
The history of deviant logics is without a single success. Bivalence has been denied at least since Aristotle, yet no anti-bivalent theory has ever left the philosophical nursery.
Gist of Idea
No attempt to deny bivalence has ever been accepted
Source
Roy Sorensen (Vagueness and Contradiction [2001], Intro)
Book Ref
Sorensen,Roy: 'Vagueness and Contradiction' [OUP 2004], p.8
A Reaction
This is part of a claim that nothing in reality is vague - it is just our ignorance of the truth or falsity of some propositions. Personally I don't see why 'Grandad is bald' has to have a determinate truth value.
The
20 ideas
from Roy Sorensen
9116
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Vague words have hidden boundaries
[Sorensen]
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9118
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The colour bands of the spectrum arise from our biology; they do not exist in the physics
[Sorensen]
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9119
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No attempt to deny bivalence has ever been accepted
[Sorensen]
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9121
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Illusions are not a reason for skepticism, but a source of interesting scientific information
[Sorensen]
|
9137
|
Banning self-reference would outlaw 'This very sentence is in English'
[Sorensen]
|
9139
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If nothing exists, no truthmakers could make 'Nothing exists' true
[Sorensen]
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9140
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Which toothbrush is the truthmaker for 'buy one, get one free'?
[Sorensen]
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9122
|
God cannot experience unwanted pain, so God cannot understand human beings
[Sorensen]
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9125
|
Denying problems, or being romantically defeated by them, won't make them go away
[Sorensen]
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9124
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We are unable to perceive a nose (on the back of a mask) as concave
[Sorensen]
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9126
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Bayesians build near-certainty from lots of reasonably probable beliefs
[Sorensen]
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9128
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It is propositional attitudes which can be a priori, not the propositions themselves
[Sorensen]
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9130
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Attributing apriority to a proposition is attributing a cognitive ability to someone
[Sorensen]
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9129
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I can buy any litre of water, but not every litre of water
[Sorensen]
|
9131
|
Two long understandable sentences can have an unintelligible conjunction
[Sorensen]
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9132
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An offer of 'free coffee or juice' could slowly shift from exclusive 'or' to inclusive 'or'
[Sorensen]
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9133
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Propositions are what settle problems of ambiguity in sentences
[Sorensen]
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9134
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The negation of a meaningful sentence must itself be meaningful
[Sorensen]
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9135
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We now see that generalizations use variables rather than abstract entities
[Sorensen]
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9136
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The paradox of analysis says that any conceptual analysis must be either trivial or false
[Sorensen]
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