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418Minding the Is-Ought GapJournal of Philosophical Logic 43 (1): 53-69. 2014.The ‘No Ought From Is’ principle (or ‘NOFI’) states that a valid argument cannot have both an ethical conclusion and non-ethical premises. Arthur Prior proposed several well-known counterexamples, including the following: Tea-drinking is common in England; therefore, either tea-drinking is common in England or all New Zealanders ought to be shot. My aim in this paper is to defend NOFI against Prior’s counterexamples. I propose two novel interpretations of NOFI and prove that both are true
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London School of EconomicsDepartment of Philosophy, Logic and Scientific MethodAssistant Professor
London, London, City of, United Kingdom of Great Britain and Northern Ireland
Areas of Specialization
| Normative Ethics |