Abstract

The aim of this article is to restore the radicality of W. V. O. Quine's argument against deviant logics, as found in Philosophy of Logic. The objective of this argument is to expose the emptiness of the concept of deviant logic, i.e., its nonsense. To give an account of this requires taking the full measure of the anti-psychological dimension of Quine's argument. Thus, I try to show that Quine's most radical challenge does not consist in pointing out to the deviant logician that changing logical laws means changing the meaning of logical constant terms.