Disimplicature

Speranza

There is a fundamental disagreement about which norm regulates assertion -- and Grice knew that! That's why he preferred to speak of 'quessertions'!

Proponents of factive accounts argue that only true propositions are assertable, whereas proponents of non-factive accounts insist that at least some false propositions are. 

Puzzlingly, both views are supported by equally plausible (but apparently incompatible) linguistic data.

We may delineate an alternative solution: to understand truth as the aim of assertion, and pair this view with a non-factive rule. 

The resulting account is able to explain all the relevant linguistic data, and finds independent support from general considerations about the differences between rules and aims