Paradox: Liars and the Possible Liar

john.f.post@vanderbilt.edu || Home Place


For copyright reasons most of the following can't be put on the web. But if you have access to JSTOR, say through your university, you can find the first paper listed below.


"The Possible Liar" Nous (1970), 405-09 (via JSTOR); reprinted with an "Addendum (1985)" in W. W. Bartley and G. Radnitzky, eds., Evolutionary Epistemology, Rationality, and the Sociology of Knowledge (LaSalle: Open Court, 1987), 217-20 available from Amazon.com.

"Shades of the Liar" The Journal of Philosophical Logic (1973), 370-86.

"Shades of Possibility" The Journal of Philosophical Logic (1974), 155-58.

"Propositions, Possible Languages, and the Liar's Revenge" The British Journal for the Philosophy of Science (1974), 223-34.

"Critical Study of J. L. Mackie's Truth, Probability and Paradox" The British Journal for the Philosophy of Science (1975), 73-87.

"Presupposition, Bivalence and the Possible Liar" Philosophia (1979), 645-50.


Here are some further papers that might be of interest. They amount to applications of the above to the question whether certain crucial theories of rationality are self-referentially consistent. Again for copyright reasons they can't be put on the web:


"Paradox in Critical Rationalism and Related Theories" Philosophical Forum (1971), 27-61; reprinted with an "Addendum (1985)" in W. W. Bartley and G. Radnitzky, eds., Evolutionary Epistemology, Rationality, and the Sociology of Knowledge (LaSalle: Open Court, 1987), 223-51 available from Amazon.com.

"A Gödelian Theorem for Theories of Rationality" reprinted with an "Addendum (1985)" in W. W. Bartley and G. Radnitzky, eds., Evolutionary Epistemology, Rationality, and the Sociology of Knowledge (LaSalle: Open Court, 1987), 253-67 available from Amazon.com.



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