Ayer's Verification Principle Applied to Ethics
A.J. Ayer's logical positivism applies to ethics: since moral statements cannot be empirically verified, they are neither true nor false but express emotions (emotivism).
Real World
When Ayer published Language, Truth and Logic in 1936, he argued that statements like 'Torture is evil' are no more factually meaningful than 'Ouch!' — they cannot be tested in a laboratory or derived analytically from definitions.
Exam Focus
Distinguish Ayer's verification principle from emotivism in your answer — examiners expect you to show these are separate but related claims.
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