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Single Idea 15404

[filed under theme 5. Theory of Logic / A. Overview of Logic / 4. Pure Logic ]

Full Idea

Among the more technically oriented a 'logic' no longer means a theory about which forms of argument are valid, but rather means any formalism, regardless of its applications, that resembles original logic enough to be studied by similar methods.

Gist of Idea

Technical people see logic as any formal system that can be studied, not a study of argument validity

Source

John P. Burgess (Philosophical Logic [2009], Pref)

Book Ref

Burgess,John P.: 'Philosophical Logic' [Princeton 2009], p.-5


A Reaction

There doesn't seem to be any great intellectual obligation to be 'technical'. As far as pure logic is concerned, I am very drawn to the computer approach, since I take that to be the original dream of Aristotle and Leibniz - impersonal precision.


The 18 ideas with the same theme [logic as a completely self-contained subject]:

'Blind thought' is reasoning without recognition of the ingredients of the reasoning [Leibniz, by Arthur,R]
The physical world doesn't need logic, but the mental world does [Russell]
All the propositions of logic are completely general [Russell]
There is no clear boundary between the logical and the non-logical [Tarski]
Logic is a priori because it is impossible to think illogically [Wittgenstein]
Logic seems to work for unasserted sentences [O'Connor]
The various logics are abstractions made from terms like 'if...then' in English [Hacking]
Inferences are surely part of the causal structure of the world [Fodor]
Technical people see logic as any formal system that can be studied, not a study of argument validity [Burgess]
If logic is topic-neutral that means it delves into all subjects, rather than having a pure subject matter [Read]
Formal logic is invariant under permutations, or devoid of content, or gives the norms for thought [Beall/Restall]
Logic studies arguments, not formal languages; this involves interpretations [Beall/Restall]
A train of reasoning must be treated as all happening simultaneously [Recanati]
A pure logic is wholly general, purely formal, and directly known [Linnebo]
A 'pure logic' must be ontologically innocent, universal, and without presuppositions [Linnebo]
Logic is explanatorily and ontologically dependent on rational animals [Hanna]
Logic is personal and variable, but it has a universal core [Hanna]
In modern logic all formal validity can be characterised syntactically [Engelbretsen/Sayward]