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Single Idea 14186

[filed under theme 5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / a. Logical connectives ]

Full Idea

The logical connectives are useful for bundling information, that B follows from A, or that one of A or B is true. ..They import no information of their own, but serve to record combinations of other facts.

Gist of Idea

Logical connectives contain no information, but just record combination relations between facts

Source

Stephen Read (Formal and Material Consequence [1994], 'Repres')

Book Ref

'Philosophy of Logic: an anthology', ed/tr. Jacquette,Dale [Blackwell 2002], p.244


A Reaction

Anyone who suggests a link between logic and 'facts' gets my vote, so this sounds a promising idea. However, logical truths have a high degree of generality, which seems somehow above the 'facts'.


The 7 ideas from 'Formal and Material Consequence'

If logic is topic-neutral that means it delves into all subjects, rather than having a pure subject matter [Read]
Not all arguments are valid because of form; validity is just true premises and false conclusion being impossible [Read]
If the logic of 'taller of' rests just on meaning, then logic may be the study of merely formal consequence [Read]
In modus ponens the 'if-then' premise contributes nothing if the conclusion follows anyway [Read]
Logical connectives contain no information, but just record combination relations between facts [Read]
Conditionals are just a shorthand for some proof, leaving out the details [Read]
Maybe arguments are only valid when suppressed premises are all stated - but why? [Read]