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Single Idea 11210

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

Full Idea

If 'and' and 'but' really are alike in sense, in what might that likeness consist? Some philosophers of classical logic will reply that they share a sense by virtue of sharing a truth table.

Gist of Idea

Standardly 'and' and 'but' are held to have the same sense by having the same truth table

Source

Ian Rumfitt ("Yes" and "No" [2000])

Book Ref

-: 'Mind' [-], p.784

A Reaction

This is the standard view which Rumfitt sets out to challenge.

The 4 ideas from '"Yes" and "No"'

11210 Standardly 'and' and 'but' are held to have the same sense by having the same truth table [Rumfitt]
11211 If a sound conclusion comes from two errors that cancel out, the path of the argument must matter [Rumfitt]
11212 The sense of a connective comes from primitively obvious rules of inference [Rumfitt]
11214 We learn 'not' along with affirmation, by learning to either affirm or deny a sentence [Rumfitt]