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Single Idea 11072
[filed under theme 5. Theory of Logic / A. Overview of Logic / 4. Pure Logic
]
Full Idea
Beyond an innate and thus universally share protologic, each reasoner's mental logic is only more or less similar to the mental logic of any other reasoner.
Gist of Idea
Logic is personal and variable, but it has a universal core
Source
Robert Hanna (Rationality and Logic [2006], 5.7)
Book Ref
Hanna,Robert: 'Rationality and Logic' [MIT 2006], p.151
A Reaction
This is the main thesis of Hanna's book. I like the combination of this idea with Stephen Read's remark that each student should work out a personal logic which has their own private endorsement.
The
18 ideas
with the same theme
[logic as a completely self-contained subject]:
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19370
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'Blind thought' is reasoning without recognition of the ingredients of the reasoning
[Leibniz, by Arthur,R]
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16486
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The physical world doesn't need logic, but the mental world does
[Russell]
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14452
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All the propositions of logic are completely general
[Russell]
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10048
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There is no clear boundary between the logical and the non-logical
[Tarski]
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11062
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Logic is a priori because it is impossible to think illogically
[Wittgenstein]
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3746
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Logic seems to work for unasserted sentences
[O'Connor]
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13845
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The various logics are abstractions made from terms like 'if...then' in English
[Hacking]
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2442
|
Inferences are surely part of the causal structure of the world
[Fodor]
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15404
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Technical people see logic as any formal system that can be studied, not a study of argument validity
[Burgess]
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14187
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If logic is topic-neutral that means it delves into all subjects, rather than having a pure subject matter
[Read]
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10690
|
Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought
[Beall/Restall]
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13232
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Logic studies arguments, not formal languages; this involves interpretations
[Beall/Restall]
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22246
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A train of reasoning must be treated as all happening simultaneously
[Recanati]
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10638
|
A pure logic is wholly general, purely formal, and directly known
[Linnebo]
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10781
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A 'pure logic' must be ontologically innocent, universal, and without presuppositions
[Linnebo]
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11058
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Logic is explanatorily and ontologically dependent on rational animals
[Hanna]
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11072
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Logic is personal and variable, but it has a universal core
[Hanna]
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13850
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In modern logic all formal validity can be characterised syntactically
[Engelbretsen/Sayward]
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