Truth - Truth What is truth Semantic theory What does true` mean Accounts for inferences using true` Target sentences(Tarski Snow is white` is true

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    Truth
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    What is truth? Semantic theory: What does  ‘true’ mean? Accounts for inferences using  ‘true’ Target sentences (Tarski): ‘Snow is white’ is true iff snow  is white
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    Paradoxes Liar (Epimenides): “One of  themselves, a prophet of their  own, said, ‘Cretans are always  liars….’" ( Titus  1:12)
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    Paradoxes Liar: “One of themselves, a  prophet of their own, said,  "Cretans are always liars. . . ."  ( Titus  1:12) Is this really paradoxical? Can it be true or false?
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    Cretans Cretan: ‘Everything a Cretan says is  false.’ Suppose it is true.
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    Cretans Cretan: ‘Everything a Cretan says is  false.’ Suppose it is true. Then what this Cretan has said must be  true. But then everything a Cretan says is  false. Including that. So, it must be false.
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    Cretans Cretan: ‘Everything a Cretan  says is false.’ Suppose it is false.
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    Cretans Cretan: ‘Everything a Cretan  says is false.’ Suppose it is false. Then what this Cretan has said  must be false. So, sometimes Cretans say true  things. That’s possible— the above just  isn’t an example of it.
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    Cretans Everything a Cretan says is false. He’s such a Cretan!
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    Modern Liars Liar: ‘This sentence is false’ Strong liar: ‘This sentence isn’t  true’ Pairs (etc.):  A: ‘Everything B says is true’ B: ‘Everything A says is false’
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    Philosophical theories of  truth What makes true sentences  true? By virtue of what are true  sentences true? What do true sentences have in  common?
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    Correspondence Theory A sentence (or statement, or  belief) is true iff it corresponds  with reality iff, that is, it corresponds to  some fact.  It is false if there is no  corresponding fact.
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    Aristotle’s version “To say of what is that it  is not, or of what is not  that it is, is false,  while to say of what is  that it is, and of what is  not that it is not, is true;
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    Bivalence “so that he who says of anything 
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This note was uploaded on 03/19/2008 for the course PHL 301 taught by Professor Bonevac during the Fall '08 term at University of Texas at Austin.

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Truth - Truth What is truth Semantic theory What does true` mean Accounts for inferences using true` Target sentences(Tarski Snow is white` is true

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