Expressivism Detrivialized

John Cantwell


It is argued that David Lewis’ two triviality results (the probability of the conditional cannot be the conditional probability; desire cannot be belief) both present a potential problem for expressivism, are related, and can both be resolved in the same way: by allowing for gappy propositions (propositions that can lack truth value). In particular, a semantics for ‘A is good’ is provided that allows one to embrace the major premises leading up to Lewis’ triviality result while avoiding its conclusion.


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