 Comparisons have conversationally adjustable contents, resulting from the attribution of conversationally adjustable contents to comparative constructions such as is like. To assign a comparative statement a particular truth-value, one must bring to bear a conversationally adjustable canon of similarity, telling us how much like (a) B and in what respects a thing A needs to be in order for A to count as unqualifiedly like (a) B for present conversational purposes. For instance, in ordinary contexts governed by a routine default canon of similarity,