Meaningless
Meaningful
Cognitivism
Non-cognitivism
Vienna Circle
Logical Positivism
Analytic
statements that are true by definition
Synthetic
statements that are empirically verifiable
The Picture Theory of Meaning
Verification Principle
the meaning of a statement is its verification
Verification in practice
possible only when statements can be conclusively established empirically
Verification in principle
Meaningless language - Ayer
Verificationism - strengths
Objections to verificationism
Evaluating verificationism - Parable of the Celestial City
Criticism: the verification principle cannot be stated accurately
Criticism: the verification principle rules out unverifiable sentences which are actually meaningful
Falsification Principle
a sentence is factually significant only if there is some form of evidence that could falsify it
Falsification - Parable of the Gardener
Falsification criticism - Parable of the Lunatic
Blik
Falsification criticism - Parable of the Stranger
Language game