Abstract

Kaplan's theory of demonstratives and deicticals can be brie y stated as follows. Expressions of this kind depend for their interpretation on the context of utterance and in a context of utterance they refer directly to whatever they refer to. Direct reference in turn consists in two properties. The rst property is the absence of a Fregean sense. The context does its work once and for all and the reference is not in uenced by a counterfactual circumstance in which something else is pointed at or somebody else is speaking. The second property is the rigidity of the reference: if the reference is direct, it is the same in all possible worlds. It is rigid in a sense slightly stronger than Kripke's, because even in worlds where the object does not exist, the reference is still to the object referred to in the context of utterance. Demonstratives or deicticals can fail to refer when the utterance is abnormal. Consider e.g. a demonstrative without an accompanying pointing gesture or one with a pointing gesture that fails to point to anything. For deicticals we need slightly more imagination: consider an inscription in the beach sand of I am the greatest or an utterance coming from outside of space-time of I am here now. In such cases we have a defective context of utterance. One class of counterexamples to this theory is important in the context of dialogue systems incorporating the facility of pointing in a graphical representation visible on the computer screen: demonstratives used to refer to objects represented in a picture. Kaplan discuError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapsses his pointing to a picture of Spiro T.