An argument against direct reference theories of these expressions used the example of a shopper circling a store while spilling sugar, and introduced the "essential" type of these expressions.
Lewis introduced a distinction between attitudes involving one of these expressions and attitudes "de dicto." An argument against direct reference theories of these expressions used the example of a shopper circling a store while spilling sugar, and introduced the "essential" type of these expressions. A logic for these expressions handles the non-pure type of them using a function transforming descriptions to directly referential terms in its LD structures, and that function is the Dthat operator introduced by Kaplan. If these expressions require speaker intention or pointing gestures to fix content, they are true demonstratives. For 10 points, name these expressions having an invariant character and a context-dependent content, such as "today" and "I".
Lewis introduced a distinction between attitudes involving one of these expressions and attitudes "de dicto.
indexicals [accept demonstratives before mention]