  The indexicals that philosophers have studied most are the pronouns ‘I’, ‘he’, ‘she’, ‘it’, ‘this’, and ‘that’; the adverbs ‘here’, ‘now’, ‘today’, ‘yesterday’, ‘tomorrow’, and ‘actually’; and the adjectives ‘my’, ‘his’, ‘her’, ‘present’, ‘past’, and ‘actual’. The items on this list come mostly from David Kaplan’s influential work on indexicals, Demonstratives (Kaplan 1989a).